Aztec/Apache (PA-23) Airframe STCs

Aztec/Apache (PA-23) Airframe STCs

Sorted by STC owner 

Note:  This data is extracted from the Jan 1998 FAA STC listing. There are likely to be more recent STCs that have become available. Be sure to verify the applicability with the STC holder before purchase.

Also, if you know of newer STCs and/or corrections to this list, pleaselet me know and I will try to incorporate them.  Please let me knowif you know the websites for any companies without links...


A/C Fuel Cells Worldwide, Inc., 6075 E Shelby Drive, MemphisTN 38141

 SA00762AT:  Issued 5/1/95.
     PA-23-250 (S/N 7654001 and up)
     Installation of left hand and right hand fuelcell assemblies.

 SA00800AT:  Issued 6/30/95.
     PA-23-250 (S/N 7554001 and up);
     Installation of left hand and right hand fuelcell assemblies.

 SA01250AT:  Issued 1/23/97.
     PA-23-250 (S/N 7654001 and up)
     Installation of left hand and right hand tipfuel cell  assemblies.


AAR Oklahoma, Inc., Will Rogers Airport, 6611 S. Meridian,Oklahoma City, OK 73159

SA441NW:  Reissued 7/22/88.
     PA-23-250
     Installation of two Hartzell HC-E3VR-2ATF/FC7663-2R3-bladed  props and Piper Navajo spinner assembly (P/N 43940-00) and associated systems.


ACD Corporation, 1520 26th Avenue NW, Gig Harbor, WA 98335

SA2687NM:  Reissued 2/24/92.
    PA-23 Series
    Installation of Turboplus/Electronics Int'l gaugesand switches to reflect new Turboplus face plates to redesignate selectedfunctions or switch positions.


Advanced Aero Safety, P.O. Box 2685, Renton, WA 98055

SA1007NW:  Amended 5/4/87.
    PA-23, -23-160, -235, -250, -E23-250
    Installation of a low thrust detector system.


Advanced Aircraft Extinguishers, P.O. Box 1117, Blue Springs,MO 64013-1117

SA1798CE:  Reissued 2/1/93.
    PA-23-160, -235, -250, -E23-250
    Installation of fire extinguishing system in cabinand/or fire extinguishant system in engine compartments.


Aero Medical Products Mfg, 4514 Maple Road, West Bend WI53095

 SA616CH:  Reissued 5/1/97.
     PA-23, -23-160, -23-235, -23-250, PA-E23-250
     Install Egan Aviation Air Ambulance StretcherP/N 125 using  installation kit P/N 800.


Aerospace Projects Unlimited, Inc., Lakeland Municipal Arpt,P.O. Box 6816, Lakeland, FL 33807

SA1054SW:  Reissued 11/7/83.
    PA-23 Series
    Stretcher.


AeroStol Co., (No address provided)

SA1063CE:  Reissued August 1976.
     PA-23-250 (Landplanes S/Ns 27-2505 thru 27-7405471)
     Installation of two Hartzell HC-E3YR-2AF/FC7663-2Rpropellers  and C-3269A or 82D3273P spinners.


Air Muskoka,Dave Gronfors, R.R. #1, Gravenhurst, Ontario, Canada P1P 1R1

SA1444WE:  Reissued 5/20/82.
    PA-23-250 (S/N 27-2505 and up)
    Installation of Edo Model 679-4930 floats and additionof left-hand passenger entry door.

SA1810WE:  Reissued 5/20/82.
    PA-23-250
    Installation of left-hand passenger entry door.


Air Transport, Inc., 1015 N. Carlton, Liberal, KS 67901

SA2844CE:  Issued 7/29/92.
    PA-23, -23-160, -235, -250, PA-E23-250
    Installation of a plastic cap enclosure over theWhelen anti-collision strobe light system.


AiResearch Aviation Co., Capitol Airport, Springfield, IL62705

SA688CE:  Reissued 7/27/78.
    PA-23-250
    Installation of propeller unfeathering system.


AiResearch Avn Svc. Co., 6201 W. Imperial Hwy, Los Angeles,CA 90045

SA852WE:
    PA-23 Series (S/N's 27-1 thru 27-2504).
    Turbosupercharged Lycoming O-540-A1B5, -A1D5, or-A3D5 engines

SA909WE:
    PA-23 Series
    Turbosupercharged Lycoming IO-540-J4A5 engines.

SA978WE:
    PA-23 Series
    Turbosupercharged Lycoming IO-540-C4B5 engines.


Airborne Communications, Inc., Lunken Airport, Cincinnati,OH 45275

SA1-28:
    PA-23 Series
    Radio rack limited to 30 pounds of radio equipment.


Airborne Mfg Co., 711 Taylor Street, Elyria, OH 40355

SA107GL:  Issued 1/23/76.
     PA-23-250, -E23-250
     Conversion of oil lubricated de-ice pumpsand related hardware to  Airborne dry air pump 400 series.

SA663CE:  Reissued 4/17/72.
     PA-23-250 (Aztec C, I, E);
     Installation of Goodyear ice-guard de-icingkit Nos. 320-642.


Aircraft Components, Inc., 755 Woodward Avenue, Benton Harbor,MI 49023

SA1-120:
    PA-23 Series
    F-300 automatic pilot.


Aircraft Systems, Inc., 5187 Falcon Road, Rockford, IL 61109

SA3-564:  Reissued 3/20/92.
    PA-23, -23-160;
    This approval provides for the installation of aWoodward Governor propeller unfeathering accumulator kit number 210313.

 SA25GL: Reissued 3/20/92.
     PA-23-250, -E23-250;
     Installation of propeller unfeathering accumulatorkit number  213632.
 

Airport Development Corp., 5120 W. Rowland Avenue, Littleton, CO80120
SA764WE:
    PA-23 Series
    Aztec "B" nose section.


AlliedSignal Aviation Services, 6201 W. Imperial Highway,Los Angeles, CA 90045

SA909WE:  Reissued 6/3/93.
    PA-23-250, -E23-250 S/N 27-2505 and subsequent
    Installation of turbosupercharged Lycoming IO-540-J4A5engines.


AlliedSignal Avionics Inc., 400 North Rogers Road, Olathe,KS 66062

SA1163CE:  Reissued 1/31/95.
     PA-23-250
     Installation of KFC-200 automatic flight controlsystem (2 axis),  with or without flight command indicator.

 SA1022CE:  Reissued 1/31/95.
     PA-23-250
     Installation of King Model KGS-55 pictorialnavigation system  (compass), with optional KA-52 autopilot adapter.

SA1027CE:  Reissued 1/31/95.
     PA-23-250;
     Installation of KCS-55 pictorial navigationsystem (compass),  with optional KA-57 autopilot adapter.


Apache ModificationAircraft (Geronimo/Diamond Aire), 1893 Airport Road, KalispellMT 59901, Phone: (406) 752-5092

SA162SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Installation of cabin emergency exit window andsixth seat.

SA362SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Installation of rear baggage compartment.

SA371SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Installation of fiberglass nose cone.

SA452SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Installation of third window in aft cabin, leftand right.

SA461SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Installation of Ramshorn type control wheel.

SA462SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Installation of one-piece windshield.

SA463SW: Reissued 11/24/92.
    PA-23, PA-23-160, -235, -250
    Landing gear wheel well doors.

SA497SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Fiberglass engine nose cowl

SA498SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Installation of dual brakes.

SA499SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Engine nacelle and fuselage wing root fairings.

SA636SW: Reissued 10/10/97.
    PA-23, PA-23-160, -235, -250
    Modified nose, gear doors, nacelle fairings, andwing tips.

SA671SW: Reissued 10/10/97.
    PA-23, PA-23-160;
    Dorsal fin and square rudder modification.

SA899SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Installation of Lycoming O-360-AID engine and HartzellHC-C2YK-2RB/7666A-2 propeller.

SA1294SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Installation of fiberglass tail cone.

SA2793SW: Reissued 10/10/97.
    PA-23, -23-160;
    Installation of rubber hinge reinforcing bracket.

SA3843SW: Reissued 10/10/97.
    PA-23, -23-160
    Installation of electrical propeller deicing boots.

SA4007SW: Reissued 10/10/97.
    PA-23, PA-23-160;
    Installation of elevator brace and ribs.

SA4178SW: Amended 10/10/97
    PA-23, PA-23-160, -235, -250 (through 27-7554168)
    New standard instrument panel, 781-1 assembly withoptional conversion, 781-3 assembly having full copilot's flight panel.

SA4466SW: Reissued 10/10/97.
    PA-23, -23-160
    Installation of revised cowling.

SA5589SW: Reissued 10/10/97.
    PA-23, PA-23-160
    Inflatable seal on cabin entry door.

SA5730SW: Reissued 10/10/97.
    PA-23, PA-23-160;
    Modified fuel filler neck opening to accept ModelPA-23-250 fuel caps.

SA5918SW: Reissued 10/10/97.
    PA-23, -23-160
    Installation of one piece windshield.


Armtec Industries, Inc., Edison Electronics Div., ManchesterMunicipal Arpt, Manchester, NH 03103

SA1585SO: Reissued 9/24/84.
    PA-23-250;
     Installation of engine fire detection system.


ARNAV Systems, Inc., 22007 Meridiam East, Graham, WA 98338

 SA1162EA:  Reissued 4/29/91.
     PA-23-250, -E23-250 S/N 27-2000 and up
     Installation of Silver Instruments fueltronIIIG or IIIP digital  fuel flow and totalizer system.

 SA3285NM:  Issued 11/24/86.
     PA-23-250, -E23-250
     Installation of ARNAV Systems FC-10/FT 10digital fuel flow  indicating system.

 SA4151WE:  Reissued 4/29/91.
     PA-23-250 (carbureted engine only);
     Installation of Silver Instruments fueltronIIIG-C or IIIP-C  digital fuel flow and totalizer system.


Associate Aircraft Tool and Mfg, Inc., 3660 Dixie Highway,Hamilton, OH 45012

SA1-399:
    PA-23 Series
    Oil-free vacuum PA-201.


Astronautics Corp. of America, 2416 Amsler Street, Torrance,CA 90505

SA3290WE:  Issued 11/8/76.
     PA-23-250, -E23-250
     Installation of Pathfinder autopilot systemsand/or pitch trim  systems.


Avco Corporation, Aerospace Structures Div, Nashville, TN37202

SA266SO:
    PA-23 Series
    Modification of fuel cap 16097-00 by making a newcover and enlarging the lower vent hole. Rework fuel cell filler neck door19049-06 by putting a spring loading vent in the door to be used as auxiliaryvent during icing conditions.


Aviation Fabricators, 504 Price Lane, Clinton, MD 64735

SA148SW:  Reissued 8/21/87.
     PA-23, -23-250;
     Replacement of right front seat with stretcher.


Aviation Research Corp., P.O. Box 718, Santa Ynez, CA 93460

 SA2914WE:  Issued 8/13/74.
     PA-23 Series
     Installation of improved rudder trim tab actuatingrod.


Avionics, Inc., Terminal Building, Lunken Airport, Cincinnati,OH 45226

SA1-137:  Reissued 8/7/72.
    PA-23 Series
    Installation of Tactair T-3 automatic pilot andoptional installation of Tactair AH-1 altitude hold device (for use withTactair T-3 autopilot).

SA232EA:  Reissued 8/7/72.
    PA-23 Series
    Installation of Tactair omni lock Model OL-1 andoptional installation of Tactair localizer adapter Model LA-1 (for usewith Tactair model omni lock Model OL-1).


B.F. Goodrich Aerospace and Defense Products, 500 South MainSt., Akron, OH 44318

SA1-53:
    PA-23 Series
    Conversion to Goodyear 6.50-8 wheels (9531319) andbrakes (9531779).


B.F. Goodrich Aerospace Lighting Systems Division, 129 FairfieldStreet, Oldsmar, FL 34677-3657

SA398CE:  Reissued 1/31/96.
    PA-23, -160, -250, -235
    Install Hoskins twilighter Mk III supplemental lightingsystem consisting of Model F wing lights with Model P or K (dual) taillight.

SA236CE:  Reissued 1/31/96.
    PA-23, PA-23-160, -235, -250
    Installation of Hoskins Supplemental Model B Highintensity wing tip lights, Model C tail lights, with or without Model 2high intensity fuselage lights.


B.F. Goodrich Deicing Systems, 1555 Corporate Woods Pkwy,Uniontown OH 44685

SA1-484:  Reissued 3/1/96.
    PA-23, PA-23-160
    Electrothermal propeller deicing system.

SA1-485:  Reissued 3/1/96.
    PA-23-250, 5 or 6 PCLM
    Install electrothermal propeller deicing system.

SA1-534: Reissued 3/1/96.
    PA-23-250
    Installation of BFGoodrich lightweight reservoirtype deicing system.

SA155EA:  Reissued 3/1/96.
    PA-23-235, -23-250, PA-E-23-250
    Install B.F. Goodrich pneumatic de-icing system.

SA195EA:  Reissued 3/1/96.
    PA-23-250, -E23-250 (S/Ns 27-2505 and up)
    Installation of Goodrich Electrothermal propellerde-icing system kit 77-170.

SA319EA:  Reissued 3/1/96.
    PA-23-250
    Install electrothermal propeller deicing system.

SA1-177:  Reissued 3/1/96.
    PA-23, PA-23-160
    Lightweight reservoir type pneumatic deicing system.


B.F. Goodrich Flight Systems, Inc., 2001 Polaris Parkway,Columbus, OH 43240-2001

 SA51GL:  Reissued 1/31/92.
     PA-23-250, -E23-250
     Install BF Goodrich Systems, Inc. AD611/Darea navigation system  per STC.

 SA475GL:  Reissued 1/31/92.
     PA-23-250
     Install either a BF Goodrich RNAV 612 or anRNAV 612A area  navigation system, with optional 612 RIU remote interfaceunit.

 SA1162GL:  Reissued 1/31/92.
     PA-23-250
     Install a BF Goodrich LRN500, or LRN500(501),or F4, or F4(F14)  long range navigation system.

 SA679GL:  Reissued 1/31/92.
     PA-23-250
     Install a BF Goodrich long range navigationsystem, LNS616 or  LNS616A or LNS616B with optional inclusion of BFGoodrich Loran C  receiver LR651, and/or their data base DI681.


Bendix Avionics Div, P.O. Box 9414, Ft. Lauderdale, FL 33310

SA429SO:  Amended 6/2/76.
     PA-23-250
     Installation of Bendix Model FCS-80 automaticflight control system with manual electric pitch trim and flight director indicator.

 SA953SO:  Issued 8/18/77.
     PA-23 Series
     Installation of Bendix NP-2041A area navigationcomputer  programmer.

 SA479SO:  Issued 11/8/71.
     PA-23-250
     Installation of Bendix WLS-880 wings levelersystem with and  without Bendix FCS-810 automatic flight control system.

 SA952SO:  Issued 8/18/77.
     PA-23-250 (Aztec F) defined by item VI inTCDS 1A10
     Installation of Bendix FCS-870 automatic flightcontrol system  including manual electric pitch trim and optionalflight director system.

 SA590SO:  Issued May 1974.
     PA-23-250
     Installation of M-4D automatic flight controlsystem including optional manual electric pitch trim and optional flightdirector  system.

 SA591SO:  Issued May 1974.
     PA-23-250;
     Installation of Bendix RNS-3400 area navigationsystem.


Bendix Corporation, Bendix Radio Division, East Joppa Road,Towson, MD 21204

 SA3-509:
     PA-23 Series
     L-2B autopilot with or without altitude controland approach  coupler.


Bob Fields Aerocessories, 5673 Stanford St., Ventura, CA93003

SA4237WE:  Issued 9/25/80.
    PA-23, -23-160, -235, -250, -E23-250
    Installation of inflatable door seal.


Bodell, Malcolm E., 23804 Pennsylvania Ave., Torrance, CA90501

 SA4-994:
     PA-23 Series
     Installation of Firestone Model DFA-233 wheelassemblies, Model  CFA-299 brake assemblies and 6.50x8 6-ply tires.

 SA4-1166:
     PA-23 Series
     Installation of Firestone Model DFA-180 wheel.


BogertAviation, Route 1, Box 1676, Prosser, WA 99350

SA3531NM:  Amended 9/20/90.
    PA-23, -23-160, -250, -E23-250
    Install copper electrical cables.

SA4008NM:  Amended 3/23/90.
    PA-23 Series
    Installation of removable panels on the batterybox slides.


Brackett Acft Co., 7045 Flightline Drive, Kingman, AZ 86401

SA71GL:  Amended 4/17/95.
    PA-23, PA-23-160, PA-23-250, PA-E23-250 (with STCSA909WE)
    Installation of air filters.

SA693CE:  Reissued 3/3/83.
    PA-23-235, -250
    Replace existing engine induction air filter withAC Spark Plug Division filter.
 

Brittain Industries, Inc., P.O. Box 51370, Tulsa, OK 74151
SA4-522:  Reissued October 1973.
    PA-23 Series
    Autopilot.

SA551WE: Reissued October 1973.
    PA-23 Series
    Installation of Brittain Model B-4 flight controlsystem.

SA614WE:  Reissued October 1973.
    PA-23 Series
    B-4 flight control system including PC-1 pitch assist,AH-1 altitude hold, and NAV-1 navigation coupler.

SA615WE:  Reissued October 1973.
    PA-23 Series
    Autopilot and optional nav-coupler "add-on" BI-300,BI-301, or BI-304.

SA616WE:  Reissued October 1973.
    PA-23 Series
    Pneumatic pitch assist PC-1 and altitude hold AH-1.

SA617WE:  Reissued October 1973.
    PA-23 Series
    Pneumatic pitch assist PC-1 and altitude hold AH-1.

SA662WE:  Reissued October 1973.
    PA-23
    Hi-Lo sensitivity adaptor BI-400, and autopilotwith NAV-1 navigation coupler and heading lock.

SA1348WE:  Reissued 10/20/72.
    PA-23 Series
    B-4 flight control system.

SA1486WE:  Reissued 10/20/72.
    PA-23 Series
    Installation of Brittain Model B2C flight controlsystem.

SA1746WE:  Reissued 10/20/72.
    PA-23-235
    Installation of Brittain Industries B-5 flight controlsystem.

SA1847WE:  Reissued 10/20/72.
    PA-23-235
    Installation of Brittain up-command signal adapterkit.


Burlington Northern Airmotive, 3600 East 70th St., Minneapolis,MN 55450

 SA427GL:  Issued 7/23/80.
     PA-23-250, (S/N 27-2000 and subsequent)
     Installation of Tull microwave landing systemairborne equipment.


C & D Airmotive Prod. Inc., 302 Post Road, Buchanan,MI 49107

SA1349GL:  Issued 2/8/89.
    PA-23-250
    Install combustion heater.

SA1350GL:  Issued 2/8/89.
    PA-23-250
    Replace existing combustion heater.

SA1448GL:  Issued 2/6/90.
    PA-23-250
    Replace existing combustion heater with C&DAirmotive combustion heater P/N 1059.

SA1449GL:  Issued 2/6/90.
    PA-23-250
    Install combustion heater P/N 1059.


Capehart Industries, Inc., P.O. Box 809, Mena, AR 71953

SA8922SW:  Issued 7/21/94.
    PA-23-150, -160, -235, -250, "C" PA-23, PA-23 Turbo250 C,D,E,F
    Installation of replacement Ultimate Engine OilFilter for Textron Lycoming and Teledyne Continental engines.


Capitol Aviation, Inc., Capitol Airport, Springfield, IL62705

 SA3-94:
     PA-23 Series
     Narco 1016 antenna and/or remote compass transmitter,equipment  shelf, oxygen bottle mounting.

 SA3-158:
     PA-23 Series
     Radio power pack on bulkhead forward of instrumentpanel.


CE Product Development Group, 2522 East Douglas, Wichita,KS 67202

 SA3-644:
     PA-23 Series
     Adams Rite 2302 rev. C-2 handle on insideof cabin door.


Century Flt Systems,Inc., F.M. 1195, P.O. Box 610, Mineral Wells, TX 76067

SA3007SW-D:  Issued 6/20/84.
    PA-23-150, -E23-150, PA-23-250, -E23-250
    Installation of Mitchell automatic flight systemmodel AK504 consisting of Piper altimatic IIIC autopilot with optionalcommand/automatic electronic pitch trim, radio coupler and glide slopecoupler.
SA3099SW-D:  Reissued 6/20/84.
    PA-23, -23-160
    Mitchell automatic flight system AK587 consistingof Century I auto-pilot with optional omni tracker.

SA3100SW-D:  Reissued 5/24/84.
    PA-23, -23-160
    Mitchell automatic flight system AK588 consistingof Century III autopilot with optional radio coupler and glide slope coupler.

SA3101SW-D:  Reissued 5/24/84.
    PA-23, -23-160
    Mitchell automatic flight system AK586 consistingof Century IIB autopilot with optional radio coupler.

SA747SW:  Issued 6/25/84.
    PA-23-235, -23-250
    Installation of Mitchell pitch trim system modelAK228 (manual).

SA540SO:  Reissued 6/25/84.
    PA-23-235, -23-250, -E23-250
    Installation of Piper autocontrol III model AK162.

SA566SW:  Reissued 6/25/84.
    PA-23-235, -23-250, -E23-250
    Installation of a Mitchell AK184 automatic flightsystem, AK185 stabilizer, and AK188 automatic trim system.

SA921SW:  Reissued 7/6/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system AK242 consistingof Century III autopilot with optional automatic pitch trim and radio coupler.

SA1091SW:  Reissued 7/9/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system FD/AP 282-184 consistingof flight director/autopilot with optional automatic electric pitch trimand automatic aileron stabilizer.

SA1205SW:  Reissued 7/9/84.
    PA-23-235, -23-250, -E23-250
    Installation of Mitchell command electric trim modelAK268.

SA1262SW:  Reissued 7/9/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system FD282-242 consistingof flight director/autopilot, and automatic pitch trim.

SA1276SW:  Reissued 7/9/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system AK332, consistingof Piper Autoflite II and omni tracker system.

SA1377SW:  Reissued 7/10/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system AK340, consistingof Century I and optional tracker.

SA3133SW-D:  Reissued 6/5/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system AK599, consistingof Century III autopilot with optional radio and glide slope couplers.

SA3137SW-D:  Reissued 6/5/84.
    PA-23-235, -23-250, -E23-250
    Mitchell automatic flight system AK611 consistingof Century IIB autopilot with optional radio coupler.

SA838SW:  Reissued 6/29/84.
    PA-23-235, -23-250, -E23-250
    Installation of Mitchell glide slope coupler ModelIC493.

SA3209SW-D:  Reissued 12/7/83.
    PA-23-250
    Mitchell automatic flight system, Piper altimaticX autopilot, AK684 or AK684FD, Piper altimatic X flight director autopilotwith remote annunciator.

SA3005SW-D:  Reissued 6/20/84.
    PA-23-250, -E23-250
    Installation of Mitchell automatic flight systemmodel AK508 consisting of Piper autocontrol IIIB autopilot with optionalradio coupler.

SW1524SW:  Reissued 7/13/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK371 consistingof altimatic IIIB-1 autopilot with optional radio and glide slope couplers.

SA1571SW:  Reissued 7/13/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK382 consistingof Piper autocontrol IIIB with optional radio coupler.

SA1653SW:  Reissued 7/16/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK372 consistingof AutoFlite II with optional tracking system.

SA3002SW-D:  Reissued 8/1/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK479 consistingof Piper Altimatic IIIC autopilot with optional command/automatic electronicpitch trim system, radio coupler, and glide slope coupler.

SA3003SW-D:  Reissued 8/1/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK477 consistingof Century IV autopilot or AK477FD consisting of a Century IV flight directorwith optional remote annunciator.

SA3006SW-D:  Reissued 8/1/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK494 consistingof Century IV autopilot or AK494FD consisting of a Century IV flight directorwith optional remote annunciator.

SA3022SW-D:  Reissued 6/20/84.
    PA-23-250, -E23-250
    Installation of Mitchell automatic flight systemmodel AK517 consisting of Autocontrol IIIB autopilot with optional radiocoupler.

SA3027SW-D:  Reissued 8/1/84.
    PA-23-250, -E23-250
    Mitchell command/electric trim system Model AK440.

SA3104SW-D:  Reissued 5/24/84.
    PA-23-250, -E23-250
    Mitchell automatic flight system AK583, consistingof Century IIB autopilot with optional radio coupler.

SA3155SW-D:  Reissued 6/6/84.
    PA-23-250, -E23-250
    Installation of Mitchell automatic flight systemmodel AK626 consisting of Century III autopilot with optional radio couplerand glide slope coupler.

SA3156SW-D:  Reissued 6/6/84.
    PA-23-250, -E23-250
    Installation of Mitchell automatic flight systemmodel AK627 consisting of Century IIB autopilot with optional radio coupler.


Clarkson Company, Paul Spur, AZ 85642

SA4-925:
    PA-23 Series
    Magnetic flight director 2000.


Collins Radio Group, 5225 "C" Ave., N.E., Cedar Rapids, IA52406

SA1102CE:  Issued April 1975.
     PA-23-250;
     Installation of AP-107, 2-axis autopilot systemand interface  with Collins 329A-4V indicator.

 SA1103CE:  Issued April 1975.
     PA-23-250;
     Installation of AP-107 autopilot system andinterface with  Collins 329A-4V indicator.


Consolidated Fuel Systems, 1400 East South Boulevard, MontgomeryAL 36116

SA4-1637:  Reissued 9/22/95.
    PA-23, -23-160
    Installation of turbocharged Lycoming O-320-A or-B series engines.

SA2WE:  Reissued 9/22/95.
    PA-23, PA-23-160
    Installation of fuel pressure warning lights.

SA539WE:  Reissued 9/22/95.
    PA-23-235, -23-250
    Installation of Roto-Master (Rajay) turbochargedLycoming IO-540-CIB5 or IO-540-CIC5 engines.

SA1260WE:  Reissued 9/22/95.
    PA-23, -23-160
    Installation of turbocharged Lycoming O-360-A1Aor A1D engines.

SA840WE:  Reissued 9/22/95.
    PA-23-250, -E23-250 (S/N 27-2505 and up)
    Installation of Roto-Master (Rajay) Turbo-chargedLycoming IO-540-C4B5 or -C4C5 engines.


Curtiss-Wright/Marquette, Inc., 400 South Main St., FountainInn, SC 29644

 SA2-1533:  Reissued 8/10/84.
     PA-23
     Installation of windshield wiper.


Cypress Aviation, Inc., 3636 Drane Fld Road, Lakeland, FL33803

SA1124EA:  Reissued 9/26/86.
     PA-23-235, -23-250, -E23-250;
     Installation of enlarged cargo door.


D. C. Thermal, Inc., 311 South 16th, LaPorte, TX 77571

SA1455NM:  Reissued 12/11/85.
    PA-23 Series
    Installation of a flame proof auxiliary heater-dryer,Model 12-1600.


DeVore Aviation Corp., Suite B, 6104 Kircher St., Albuquerque,NM 87109

SA1126EA:  Reissued 9/28/78.
    PA-23-235, -23-250 (S/N 271 thru 27-7554172), PA-E23-250(S/N 27-2505 thru 27-7554172), PA-23-250 (Model "F") (S/N 27-7654001 andup)
    Installation of DeVore vertical tail floodlightson upper surface of stabilator.
DeVore Engineering Svc., 41-27 Bell Blvd, Bayside, NY 11361
SA65EA:
    PA-23 Series
    One Aerojet-General 15NS-250 aircraft rocket engineon underside of fuselage on airplane centerline aft of main spar wing andrelocation of cabin air intake scoop assembly.


Doutt, Kingsley A., 115 W. Maple St., Alpena, MI 49707, ANDCharles L. Petch, Hubbard Lake, MI 49747

 SA3-397:
     PA-23 Series
     Petch Manufacturing Company right or left-handyhydrotrim aileron  trim device.


DuraFlex Fuel Cells Corporation, 103 Centennial Drive, HotSprings, AR 71913

 SA2357CE:  Amended 4/11/96.
     PA-23, -23-160, -23-235, -23-250
     Installation of LH and RH main fuel tank bladdercells, P/Nís  DF054-320 and DF054-321, as replacements for originalbladders.


Dusters & Sprayers Supply, Inc., P.O. Box 766, Chickasha,OK 73018

 SA710CE:  Reissued 8/3/82.
     PA-23-235;
     Install Campro Aviation rudder 2A8 horn extension.

 SA1136SW:
     PA-23-235
     Fiberglass fuselage shell.


Earle Aircraft, Inc,Earle Airpark, Hastings Boulevard, Hastings, FL 32145

SA922SO:  Reissued 7/28/97.
    PA-23-250
    Installation of Piper PA-23-250 "E" model fuselagenose.


Electronics Int'l Inc., 5289 N.E. Elam Young Parkway #G200,Hillsboro, OR 97124

SA00068SE:  Issued 3/31/94.
    PA-23, PA-23-160, PA-23-235, -250
    Installation of fuel flow/pressure instruments.
SA1626NM:  Amended 3/9/93.
    PA-23 Series
    Installation of Electronics Int'l Digital EGT/CHTInstruments and accessories.

SA2190NM:  Issued 2/16/84.
    PA-23 Series
    Installation of Electronics Int'l digital Volt/AMPgauges and accessories.

SA2350NM: Amended 5/26/87.
    PA-23 Series
    Installation of Electronics Int'l digital carburetor/outsideair temperature gauges.

SA2693NM:  Amended 1/26/88.
    PA-23 Series
    Installation of Electronics Int'l digital volt/ampgauges and accessories.

SA3862NM: Amended 4/25/88.
    PA-23 Series
    Installation of Electronics Int'l digital TIT/EGT/CHTinstruments and accessories.

SA4302NM: Amended 3/5/93.
    PA-23 Series
    Installation of Electronics Int'l Digital AutomaticEngine Analyzer.

SA5924NM:  Amended 6/3/94.
    PA-23, PA-23-160, -235, -250
    Installation of RPM instrument.

SA5925NM:  Amended 6/3/94.
    PA-23, PA-23-160, -235, -250
    Installation of oil pressure/temperature instrument.

SA5926NM:  Amended 5/10/93.
    PA-23, PA-23-160, -235, -250
    Installation of manifold pressure instrument.


Engineering Plating & Processing, Inc., 641 SouthwestBlvd, Kansas City, KS 66103

 SA1361CE:  Issued 3/6/78.
     PA-23-235, -23-250;
     Chrome plated brake disc installation.


Enk Aviation Corp., 1409 Plaza Court, Blue Springs, MO 64105

 SA1076CE:
     PA-23 Series
     Installation of Halon 1301 cabin fire extinguishingsystem and  engine nacelle fire extinguishant distribution system.


Environmental Research and Technology, Inc., 696 VirginiaRoad, Concord, MA 01742

 SA11NE:  Issued 10/31/75.
     PA-23-250;
     Installation of laser sensor system.


E.W. Wiggins Airways Inc., Municipal Airport, Norwood, MA02062

SA1-117:
    PA-23 Series;
    Propeller anti-icing kit.

SA243EA:
    PA-23 Series
    13-quart propeller anti-icing kit WAP-102.


Forest City Aviation Services, Inc., 749 Congress St., Portland,ME 04102

 SA219EA:  Amended 5/21/69.
     PA-23 Series
     Installation of Katz integrated flight indicatorModel KIFI-2 or  KIFI-2A.


Fram Corporation, 105 Pawtucket Ave., Providence, RI 02916

SA1-383:
    PA-23 Series
    Lube oil filter PB 55-1.


Garcia Aviation Co., 13010 SW 82nd Ave. Rd., Miami, FL 33156

 SA188SO:
     PA-23 Series
     Flight control wheel.


GEBE Instruments Corp, Hangar 3 East Hampton Airport, Wainscott,NY 11975-1038

 SA806NE:  Reissued 5/10/95.
     PA-23-250, PA-E23-250
     Installation of Sheltech SF500 or SF510 fueldata computer.


Grand Prairie Flying Svc., Almyra Arpt, Box 220, Almyra,AR 72203

 SA148SW:  Reissued 11/30/77.
     PA-23 Series
     Replacement of right front seat with stretcher.


Great Lakes AeroProducts, 2412 Davison Road, Flint, MI 48506

SA585GL:  Reissued 6/26/84.
    PA-23-250, -E23-250
    Installation of Great Lakes Aero Products windshield,P/N's W-2080, W/T-2080 and W/G-2080.

SA731GL:  Reissued 6/26/84.
    PA-23-250 S/N 27-2349 and up, PA-E23-250 S/N 27-2349and up
    Installation of Great Lakes left hand forward sidewindow (pilot's) P/N W-2085, W/T-2085, W/G-2085; and/or right hand forwardside window (door) P/N W-2086, W/T-2086, or W/G 2086.


Grimes Aerospace Company, 550 Route 55, Urbana, OH 43078

SA917EA:  Reissued 5/5/88.
    PA-23, -23-160, -23-235, -23-250, -E23-250
    Installation of Grimes Manufacturing Co. aviationwhite anti-collision strobe light system two light or three light series555 for wing tips and tail, P/N 30-0555-( ).

 SA882EA:  Reissued 11/5/91.
     PA-23
     Installation of anti-collision strobe lightkit Grimes P/N 30- 0437-100.

 SA890EA:  Reissued 11/5/91.
     PA-23-160, -235, -250
     Installation of Grimes three light strobekit P/N 34-0101-2 as  supplemental lighting.


Hamilton Acft Co., Inc., 6501 S. Park Ave., Tucson, AZ 85706

 SA4-299
 PA-23 Series
 Windows at station 144.


Hartzell Propeller, Inc., P.O. Box 909, Piqua, OH 45356

SA1-5:
    PA-23 Series
    Unfeathering system change to HC-82XL-2/7636D-4or HC-A2XL-2/7636D-4 propellers.

SA1-6:
    PA-23 Series
    Unfeathering system change to HC-82XG-2/7636D-4propellers.

SA00721CH:  Issued 7/29/97.
    PA-23, PA-23-160
    Installation of a Hartzell HC-C2YL-2CUF/FC7663-4propellers and 836-29(P) spinners.


Hoffman, Walter E., Jr., Birchwood Lodges & Cottages,East Stroudsburg, PA 18301

 SA172EA:
     PA-23-250 (S/N 27-2000 and up);
     Reinforcement of rearmost seat and installationof additional  safety belt.


Honeywell, Inc., East 70th & 34th Ave. S., Wold-ChamberlainFld Minneapolis, MN 55450

 SA335CE:  Amended 9/9/66.
     PA-23-250
     Installation of Honeywell H-14 YG-391 autopilot.


Howard & Radcliff, 8217 NW 28, Bethany, OK 73008

SW4689SW:  Issued 5/27/82.
    PA-23-235, -23-250, -E23-250
    Camera port and control panels for Wild RC 10 Camera.


HTL Division, Pacific Scientic, 1800 Highland Avenue, DuranteCA 91010

 SA660WE:  Reissued 2/4/87
     PA-23, 23-160, 23-235, 23-250
     Installation of HRD-type fire extinguishingsystem.


Innovative Scientific Development, Inc., 2003 Aviation Dr.,#19, Corona, CA 91720

 SA3581NM: Issued 3/17/87.
     PA-23-250; (S/N 27-7654001 & up)
     Installation of electric heater and auxiliaryalternator.


Insight Instrument Corp., Box 194, Ellicott Station, Buffalo,NY 14205-0194

SA157NE:  Amended 1/29/88.
    PA-23
    Installation of graphic engine monitor system ModelGEM S/N 403 and subsequent.
InterAv, Inc., P.O. Box 16714, 100 E. Nakoha, San Antonio, TX 78216
SA334SW:  Reissued 7/20/81.
    PA-23 Series
    Installation of InterAv Alternator.


J.P. Instruments,P.O. Box 7033, Huntington Beach, CA 92615

SA00061LA:  Issued 3/29/95.
    PA-23, 23-160, -23-235, -E23-250
    Installation of JPI digital tachometer.
SA2586NM:  Issued 8/14/85.
    PA-23, -23-160, -235, PA-E23-250
    Installation of J.P. Instruments exhaust gas and/orcylinder head temperature monitoring systems.


J.W. Miller Avn, Inc., HSB Box 7757, Marble Falls, TX 87654

SA599SW:  Amended 3/14/83.
    PA-23, -23-160
    Fiberglass engine nose cowls.

SA600SW:  Amended 3/14/83.
    PA-23, -23-160
    Nacelle and wing root fairings.

SA613SW:  Amended 3/14/83.
    PA-23, -23-160
    Dorsal fin and square tip fin and rudder.

SA698SW:  Amended 3/14/83.
    PA-23, -23-160
    Rear picture window.

SA774SW:  Amended 3/14/83.
    PA-23, -23-160
    Franklin 64-350-C1 engines, McCauley 2AF31C10/84SF-8propeller, increase gross weight: 3675 lbs. takeoff, 3500 lbs. landing.

SA803SW:  Amended 3/14/83.
    PA-23, -160
    Dual brakes.

SA897SW:  Amended 7/31/68.
    PA-23, -23-160
    Fiberglass propeller spinners.

SA898SW:  Reissued 3/14/83.
    PA-23, -23-160
    Revised engine cowling.

SA1306SW:  Reissued 3/14/83.
    PA-23, -23-160
    Lycoming IO-360-C1C engines with Hartzell HC-C2YK-2/C7666A-4propellers with gross weight increase.

SA597SW:  Amended 3/14/83.
    PA-23, -23-160, -235, -250
    Extended nose with baggage compartment.

SA598SW:  Amended 3/14/83.
    PA-23, -23-160, -235, -250
    Wheel well doors.

SA612SW:  Amended 3/14/83.
    PA-23, -23-160, -235, -250
    Square wing tips.

SA697SW:  Amended 3/14/83.
    PA-23, -23-160, -235, -250
    One-piece windshield.

SA779SW:  Reissued 3/14/83.
    PA-23, -23-160, -235, -250
    Installation of auxiliary tanks in the nacelle.

SA894SW:  Amended 3/14/83.
    PA-23, -23-160, -235, -250
    Nacelle saddleback.

SA1315SW:  Reissued 3/14/83.
    PA-23-235, -250
    Dorsal fin.

SA1314SW:  Reissued 3/14/83.
    PA-23-250
    Fiberglass extended nose.


James W. Sewall Co., 147 Center Street, Old Town, ME 04468

 SA480EA:
     PA-23-250
     Installation of photographic equipment.


Jobmaster Co., Inc., 608 W. Perimeter Rd., Renton, WA 98005

 SA418NW:  Amended 6/28/88.
     PA-23-250
     Float, EDO Model 679-4930 ref: STC SA1444WE.


Johns-Manville Corp., 22 East 40th Street, New York, NY 10001

SA4-1501:
    PA-23 Series
    AB-6562 and AB-6563 brake blocks.


Johnson Avn Products, P.O. Box 6031, Tyler, TX 75711

 SA557SW:
     PA-23 Series;
     Fiberglass nose cone.


Jungle Avn and Radio Serv., Inc., Box 248, Waxhaw, NC 28173

 SA1527SO:  Amended 3/7/84.
     PA-23-250;
     Installation of seat tracks and seats.


Keith Products, Inc., 4554 Claire Chennault, Dallas, TX 75248. Phone:  (972) 407-1234

SA39RM:  Reissued 8/14/92.
    PA-23-250
    Installation of freon air-conditioning system.


King Radio Corp., 400 North Rogers Rd., Olathe, KS 66061

 SA1554CE-D:  Issued 3/3/80.
     PA-23-250;
     Installation of King KAS 297 altitude selectoroption.


KS Avionics, Inc., 25216 Cypress Ave., Hayward, CA 94544

SA1512WE:  Amended 8/23/74.
    PA-23 Series
    Installation of exhaust gas temperature monitoringsystem Model EGT-1.

SA1675WE: Amended 8/28/74.
    PA-23
    Installation of exhaust gas temperature monitoringsystems EGT-2.

SA2105WE:  Issued 2/9/70.
    PA-23 Series
    Installation of Model EGT-3 exhaust gas temperaturemonitor (with rising temperature alarm).

SA2557NM:  Issued 4/29/85
    PA-23 Series
    Installation of KS Avionics EGT/CHT-2() combinedexhaust gas and cylinder head temperature monitoring system.


KWAD Company, 4530 Jettridge Dr., NW, Atlanta, GA 30327

 SA164CE:  Reissued 3/9/78.
     PA-23-250;
     Installation of Hartzell HC-A3XK-2B/7636D-4propellers and C- 2513-2P spinners.

 SA179CE:  Reissued 3/9/79.
     PA-23-250
     Installation of the following: Lycoming IO-540-A1A5or IO-540- G1A5 engines, HC-A3XK-2C/8433-10 or HC-A3XK-2B/7636D-4 propellers.

 SA272CE:  Reissued 3/9/79.
     PA-23-160;
     Installation of Lycoming IO-360-B1A enginesand Hartzell HC-C2YK- 2RA/7666A-2 propellers. Gross weight increase to4000 lbs.

 SA29CE:  Reissued 3/9/79.
     PA-23-160
     Lycoming O-360-A1D engine with Hartzell HC-92ZK-2B/8447-12Aor  HC-C2YK-2R/7666-4 propellers.

SA2CE:  Reissued 3/9/79.
     PA-23, -23-160;
     Installation of Doyn Model 1600 dorsal fin.

 SA285CE:  Reissued 3/9/79.
     PA-23, PA-23-160
     Lycoming IO-360-B1B engines and Hartzell HC-C2YK-2RA/7666A-2 propellers. Gross weight increase to 3,684 lbs. on PA-23 and to 4,000 lbs.on PA-23-160.


Masten Products Inc., 713 W. Ellsworth Road, Ann Arbor, MI48108

 SA1532GL:  Issued 11/14/90.
     PA-23, -23-160, -23-235, -23-250, -E23-250;
     Installation of on-board engine analyzer system.


McKenzie Flying Service, Inc., 28835 Lockheed Drive, Eugene,OR 97402

 SA4-783:  Reissued 4/8/91.
     PA-23
     Lycoming 150 hp O-340-A1A engine and HartzellHC82XG-2B/8433-12  propellers.

 SA4-1016:  Reissued 4/8/91.
     PA-23-160
     Lycoming 160 hp O-340-A1A engine and HartzellHCB2XG-2B/8433-12  propeller.


Means, Galen D., 847 Watson Lane, Wichita, KS 67201, ANDJackson M. Reed, 607 North Peters, Norman, OK 73069

 SA3-728:
     PA-23 Series
     Lycoming O-360-AID engines with Hartzell HC-92ZK-2B/8447-12Aor  HC-C2YK-2R/7666-4 propellers and increase gross weight to 3,684 lbs.


Memphis Aero Corp., Municipal Airport, Memphis, TN 38130

 SA202SO:
     PA-23 Series
     Fyr-Fyter 23-4, 2 1/2 lb., dry chemical, fireextinguisher.

 SA242SO:
     PA-23 Series
     Two-place couch.

 SA244SO:
     PA-23 Series
     PA-23-250 wing root and nacelle fairings.


Met-Co-Aire, P.O.Box 2216, Fullerton, CA 92633

SA250WE:
    PA-23 Series
    Dorsal fin.
SA376WE:
    PA-23 Series
    Left and right third window.

SA387WE:
    PA-23 Series
    Sixth seat and escape hatch.

SA394WE:
    PA-23 Series
    Replacement engine nose cowls.

SA395WE:
    PA-23 Series
    Lycoming O-360-A1A engines and Hartzell HC-C2YK-2R/7666-2propellers.

SA412WE: Reissued 9/20/95.
    PA-23 Series
    One-piece windshield.

SA824WE: Reissued 9/20/95.
    PA-23, PA-23-160
    Dorsal fin.

SA504WE:  Reissued 9/20/95.
    PA-23-160, -235, -250
    Installation of fiberglass wing tips.

SA1480WE:  Reissued 9/20/95.
    PA-23, PA-23-160, PA-23-235, PA-23-250
    Installation of an integral 24 gallon auxiliaryfuel tank in each wing tip.


Micro AeroDynamics,Inc., 400 Airport Rd, Suite D, Anacortes, WA 98221

SA00376SE:  Issued 10/7/96.
    PA-23-250, PA-E23-250
    Install vortex generators on the wings and verticaltail.


Mitchell Industries, Inc., P.O. Box 610, Municipal Airport,Mineral Wells, TX 76067.

SA100SW:
    PA-23 Series
    Automatic pilot AK114.

SA363SW:
    PA-23 Series
    Pitch trim system AK128.

SA465SW:
    PA-23 Series
    Pitch trim system AK148.

SA476SW:
    PA-23 Series
    Pitch trim system AK151.

SA523SW:
    PA-23 Series
    Automatic trim system AK165.


Monarch Avn Associates, P.O. Box 527, Monterey, CA 93940

 SA268WE:
     PA-23 Series
     Sixth seat and emergency exit.


Morelli, J.J., Route 1, Box 138, Platte City, MO 64079

 SA802CE:  Amended August 1976.
     PA-23, -23-160;
     Alter tip of vertical fin and rudder.


Motorola Aviation Electronics, Inc., 3302 Airport Avenue,Santa Monica, CA 90406

 SA4-345:
     PA-23 Series
     "B" Arcon.
Mountain States Avn, Inc., Stapleton Field, Denver, CO 80202
 SA4-1602:
     PA-23 Series
     Dorsal fin.


Muhlhauser, A.E. , 1602 Emerson Ave (N.C.H.), Cincinnati,OH 45275

SA1-169:
    PA-23 Series;
    Reinforcement of floor structure between fuselagestation 91-1/2 and 123-3/4 and provision for tie-down facilities.
Nelson Filter, Div. of Nelson Ind, Inc., P.O. Box 280, Stoughton,WI 53589
SA630WE:  Reissued 8/29/74.
    PA-23, -23-160, -235, -23-250
    Installation of Coast Winslow Filter Corporation409 series oil filter assemblies.


Northwest Aircraft Inc., Tacoma Narrows Airport, 1520 26thAvenue NW, Gig Harbor, WA 98335

SA5159NM:  Amended 10/21/91.
    PA-23 Series
    Installation of Northwest Aircraft chip detectorsystem.


Nayak Aviation Corp., 206 East Terminal Dr., Int'l Airport,San Antonio, TX 78216

SA69SW:
    PA-23 Series
    Extended nose with baggage compartment.

SA140SW:
    PA-23 Series
    Cabin window addition.

SA417SW:
    PA-23 Series
    Rear baggage compartment.

SA423SW:
    PA-23 Series
    Fiberglass landing gear doors.

SA484SW:
    PA-23 Series
    Large baggage door.

SA574SW:
    PA-23 Series
    Rear baggage door.

SA590SW:
    PA-23 Series
    Gross weight increased.

SA605SW:
    PA-23 Series
    Rear baggage door.

SA867SW:
    PA-23 Series
    Lycoming O-540-A1D5 engines.


Norton Company, Plastics & Synthetics Div, Aero ProductsOperations, P.O. Box 350, Akron, OH 44309

 SA430EA:  Amended 11/12/76.
     PA-23-250, -E23-250
     Installation of radome kit No. 3061X.

 SA619EA:  Amended 3/11/70.
     PA-23-250, -E23-250 (S/Ns 27-2000 and up)
     Installation of radome kit 3061K for BendixRDR-100 or RDR-110.

 SA850EA: Amended 9/12/77.
     PA-23-250;
     Installation of radome kit 4025KX.

 SA317EA:  Reissued 3/21/74.
     PA-23, -23-160, -23-235
     Radome kit No. 2025K-B for Bendix RDR-100or RDR-110 series radar  systems with 12-inch antenna per Chamberlaininstallation.


OCEM Avionics Corp., 1180 NW 36th Drive, Gainesville, FL32605

 SA01303AT:  Issued 3/17/97.
     PA-23, -150, -160, -235, -250, PA-E23-250,-250SP
     Installation of OCEM AP-3C autopilot.


Parker Hannifin Corp., Acft Wheel & Brake Div., 1160Center Road, Avon, OH 44011

 SA667CE:  Reissued 6/12/86.
     PA-23-250
     Installation of wing and empennage deicingboot.

 SA668CE:  Reissued 6/12/86.
     PA-23-250
     Installation of wing and empennage deicingsystem.


PetersenAviation, Inc., 984 K Road, Minden, NE 68959, Phone 308/832-2050,Fax 308/832-2311

SA2020CE:  Issued 8/10/84.
    PA-23
    Operation of airplane on unleaded automotive gasoline,87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknockindex (RON+MON)/2.
SA2598CE:  Issued 3/30/90.
    PA-23-160
    Operation of airplane on unleaded and leaded automotivegasoline, 91 minimum antiknock index (RON+MON)/2per ASTM SpecificationD-439. Inter-mixing with aviation gasoline also approved.


Precise Flight, Inc.,63120 Powell Butte Road, Bend, OR 97701

SA4005NM:  Amended 10/16/92.
    PA-23, -23-160, -235, -250, (Navy UO-1) -E23-250
    Installation of Precise Pulselite control unit inlanding/taxi system.

SA2622NM:  Amended 1/14/87.
    PA-23 Series
    Precise Flight pulselite.


Protective Technologies Int, 3150 S. 900 West, Salt LakeCity, UT 84119

SA00393SE:  Issued 12/6/96.
    PA-23, -23-160, -23-235, -23-250
    Installation of the G/S 2500 and G/S 2500R AircraftSecurity Alarm System.


Puccinelli, Alfred R., DER 1-145, 36 Bay Dr. East, Huntington,L.I., NY 11743

SA308EA:  Amended 11/20/78.
    PA-23-160, -235, -250
    Installation of A.R.P. Industries, Inc. carburetorice detection system 105AP in single and twin engine aircraft and singleengine helicopters powered by Continental, Franklin, and Lycoming typeengines equipped with Marvel-Schebler MA-2, MA-3, MA-3SPA, MA-4, MA-4-5,MA-6, and HA-6 series carburetors.

SA489EA:  Amended 11/20/78.
    PA-23, PA-23-160, -235, -250
    Installation of A.R.P. Industries, Inc. carburetorice detection system 107AP-12 or 107AP-24 in single and twin engine aircraftand single engine helicopters powered by Continental, Franklin, and Lycomingtype engines equipped with Marvel-Schebler MA-2, MA-3, MA-3SPA, MA-4, MA-4-5,MA-6, and HA-6 series carburetors.


R.H. Haynes, Inc., 62 Voorhis Lane, Hackensack, NJ 07601

 SA1-586:  Reissued 10/15/74.
     PA-23-160, -250
     External electrical power receptacle.


Rajay Industries, Inc., 2602 East Wardlow Rd., Long Beach,CA 90807

SA530WE:  Reissued 1/14/69.
    PA-23-235, -23-250
    Installation of Rajay turbosupercharged LycomingIO-540-C1B5 or C1C5 engines.


Reading Avn Svc., Inc., P.O. Box 1201, Reading, PA 19603

 SA337EA
     PA-23-250 (S/N 27-2505 and up)
     Conversion of aircraft electrical system to24 volt.

 SA621EA: Amended 4/15/69.
     PA-23-250 (S/N 27-2505 and up)
     Installation of a U.S. mail cargo kit.


RFB Company, Inc., Chandler Field, Purcell, OK 73080

 SA580SW:
     PA-23 Series
     Modified engine mounts.


Riley Turbostream, Van Nuys, CA 91408

 SA47SO:
     PA-23-160;
     Installation of one-piece instrument panel.


Roger Smith Aircraft Sales, Inc., Aurora Municipal Arpt,Sugar Grove, IL 60554

 SA205GL:  Issued 12/19/77.
     PA-23-250;
     Installation of Aerosonic totalize fuel flowindication system in  lieu of fuel pressure gages.
Rogerson ATS, 2201 Alton Avenue, Irvine, CA 92714
 SA309WE:  Reissued 4/26/91.
     PA-23, PA23 "160", PA-23 "250"
     Installation of non-icing fuel tank vents.


Rosemount Engr. Co., 12001 W. 78th St., Eden Prairie, MN55343

SA798EA: Reissued 2/14/72.
    PA-23 Series
    Installation of Monitair exhaust gas combustionmonitor kit.

 SA135EA:  Reissued 2/14/72.
     PA-23, -23-160, -23-235, -23-250
     Installation of engine exhaust combustionmonitor.

 SA136EA:  Reissued 2/14/72.
     PA-23, -23-160, -23-235, -23-250
     Installation of Monitair angle of attack systemModel AA-2.


Ryder Aviall, Inc.,7511 Lemmon Avenue, Dallas, TX 75209-3017

 SA2-21:  Reissued 6/1/92.
     PA-23
     Installation of landing lights in outer wingleading edge.

 SA3-334:  Reissued 9/4/92.
     PA-23
     Installation of aerial camera provisions.


S-TEC Corporation, OneS-TEC Way, Mineral Wells Municipal Airport, Mineral Wells, TX 76067-9236

SA7815SW-D:  Amended 7/28/94.
    PA-23, PA-23-160
    Installation of S-TEC System 60 two axis automaticflight guidance system, Model ST-486, with optional automatic electrictrim system.

SA8360SW-D:  Amended 11/17/94.
    PA-23, PA-23-160
    Installation of S-TEC System 60 pitch stabilizationsystem, Model ST-502, with optional automatic electric trim system.

SA8370SW-D:  Amended 7/29/94.
    PA-23, PA-23-160
    Installation of S-TEC System 40/50 single and twoaxis automatic flight guidance systems, Model ST-508.

SA7792SW-D:  Amended 3/31/92.
    PA-23-235, -23-250 (S/N 27-1 thru 27-504)
    Installation of S-TEC System 60 two axis automaticflight guidance system, model ST-332, with optional automatic electrictrim system.

SA8391SW-D:  Issued 5/13/94.
    PA-23-235, PA-23-250
    Installation of S-TEC System 65 two axis automaticflight guidance system, Model ST-533.

SA5327SW-D:  Amended 6/8/87.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 two axis automaticflight guidance system, model ST-249, with optional automatic electrictrim system.

SA5328SW-D:  Amended 8/1/84.
    PA-23-250, -E23-250
    Installation of S-TEC yaw damper system, model ST-251.

SA5353SW-D:  Issued 11/28/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 single axis automaticflight guidance system, Model ST-248.

SA5354SW-D:  Issued 11/29/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 pitch stabilizationsystem, Model ST-250, with optional automatic electric trim system.

SA5355SW-D:  Issued 11/29/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 40/50 single and twoaxis automatic flight guidance systems, Model ST-252-40/50.

SA5363SW-D:  Reissued 12/21/90.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 two axis automaticflight guidance system, Model ST-265, with optional automatic electrictrim system.

SA5364SW-D:  Issued 12/20/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 pitch stabilizationsystem, Model ST-266, with optional automatic electric trim system.

SA5365SW-D:  Issued 12/20/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 60 single axis automaticflight guidance system, Model ST-264.

SA5366SW-D:  Issued 12/21/84.
    PA-23-250, -E23-250
    Installation of S-TEC yaw damper system, Model ST-267.

SA5367SW-D:  Issued 12/21/84.
    PA-23-250, -E23-250
    Installation of S-TEC System 40/50 single and twoaxis automatic flight guidance systems, Model ST-268-40/50.

SA6039SW-D:  Issued 9/27/85.
    PA-23-250, PA-E23-250 (S/N 27-2000 thru 27-7554172)
    Installation of S-TEC manual electric trim system,Model ST-340.

SA09119AC-D:  Issued 9/20/95.
    PA-23-250, -E23-250
    Installation of S-TEC System 65 Two Axis automaticflight guidance system, Model ST-601.

SA09123AC-D:  Issued 10/12/95.
    PA-23-250, -E23-250
    Installation of S-TEC System 55 Two Axis AutomaticFlight Guidance System, Model ST-607, with Optional Autotrim System.

SA09198AC-D:  Issued 3/1/97.
    PA-23-250, PA-E23-250
    Installation of S-TEC System 55 Two Axis AutomaticFlight Guidance System, Model ST-662, with Optional
Autotrim System.


Safeway Products, Inc., 440 Middlefield Street, Middletown,CT 06457

 SA782NE:  Issued 9/25/90.
     PA-23, -23-160, -23-250
     Installation of Model 6980 de-icer boot.

 SA788NE:  Issued 9/25/90.
     PA-23, -23-160, -23-250, -23E-250
     Installation of model 6988 de-icer boot.

 SA783NE: Issued 9/25/90.
     PA-23-250, E23-250
     Installation of Safeway Model 6981 de-icerboot.


Sawyer, Elbridge P., P.O. Box 148, Dayton, OH 37321

 SA68NW:  Issued 10/30/73.
     PA-23-160;
     Installation of cargo door on right side offuselage.


ShadinCompany, Inc., 6950 Wayzata Boulevard, Minneapolis, MN 55426

SA608GL:  Issued 5/13/82.
    PA-23-250, -E23-250 (S/N 27-2000 and up)
    Installation of a Shadin Co. 910502 or 910504 fuelflow indicating system.


Shivers, C.B., Jr., 8928 Valleybrook Rd., Birmingham, AL35206

SA316SO:  Amended 10/5/66.
    PA-23 Series
    Carburetor ice detector.


Sierra Industries,Inc., P.O. Box 5184, Uvalde, TX 78802

SA2442WE:  Reissued 10/10/86.
    PA-23-235, -23-250, -E23-250
    Installation of dual hydraulic pump.

SA2445WE:  Reissued 10/10/86.
    PA-23-235, -23-250, -E23-250
    Installation of recontoured inboard wing leadingedge, stall fences, drooped ailerons in flaps down mode, rudder anti-servotab system.


Simmonds Precision Products, BFGoodrich Aerospace, CommercialFuel & Integrated Systems, 100 Panton Road, Vergennes VT 05491

 SA3823WE:  Reissued 1/30/96.
     PA-23-235, PA-23-250, PA-E23-250
     Installation of Hoskins Model CFS-2000,-2001,or FT-200 fuel
     flow indicating system.


Sinclair Oil & Gas Co., Avn Department, Box 521, Tulsa,OK 74101

 SA311SW:
     PA-23 Series
     Alternate static source.


Sky Harbour Aircraft Refinishing, P.O. Box 536, Goderich,Ontario, Canada N7A 4G7

SA00229NY:  Amended 1/24/97.
    PA-23, PA-23-160, PA-23-235, PA-23-250 (6 place)
    Installation of Sky Harbour Aircraft RefinishingLtd Ice Damage Prevention


Skyways, Inc., P.O. Box 175, Vandalia, OH 45377

SA1-103:
    PA-23 Series
    Radio-shelf.


Sperry Rand Corp., MacArthur Field, Ronkonkoma, NY 11779

 SA1-548:
     PA-23 Series
     SP-3 autopilot EB2597034.


Sperry Phoenix Co., 21111 19th Avenue, Phoenix, AZ 85000

 SA4-1131:
     PA-23 Series
     SP-3 autopilot, less altitude and navigationhold features.


Standard Precision, Inc., 4105 West Pawnee, Wichita, KS 67202

 SA230CE
     PA-23 Series,
     Airspeed indicator landing gear warning system.


Sundstrand Avn Operation, Unit of Sundstrand Corp., 4747Harrison Ave., Rockford, IL 61101

SA3-641:  Reissued 2/9/82.
    PA-23, -23-160, -23-250
    Corporation cabin air temperature control system.


Sundstrand Data Control, Inc., Sub. Sundstrand Corp., OverlakeInd Park, Redmond, WA 98052

SA1202WE:  Reissued 2/18/72.
    PA-23, -23-250
    Installation of control position indicator (CPI)system.


SynCon, Inc., P.O. Box 188, Loon Lake, WA 99148

SA4721NM:  Amended 5/8/90.
    PA-23 Series
    Installation of SynCon, Inc. Alarm System, Model100C, on non-pressurized metal structure aircraft.


TCB Composite Company, 6041 Bartholf Ave, Suite 3, Jacksonville,FL 32210

 SA01058AT:  Issued 6/10/96.
     PA-23, PA-23-160;
     Installation of Composite spinner.

 SA01263AT:  Amended 4/23/97.
     PA-23, PA-23-160;
     Installation of Composite Spinner.

 SA00733AT:  Amended 2/20/97.
     PA-23-250;
     Installation of composite aft spinner bulkheadand/or composite  spinner.

 SA01057AT:  Issued 6/10/96.
     PA-23-235, PA-23-250
     Installation of Composite spinner.


Thompson, Harold S., P.O. Box 2361, Gig Harbor, WA 99206

SA5656NM:  Amended 7/21/93.
    PA-23 Series
    Installation of Thompson burglar alarm system.


TovyaGroup, Inc., DBA: Zeftronics, 2205 Mobberly Avenue, Longview, TX75602.  Sales:  800-362-8985. Tech:  903-758-6661

 SA8430SW:  Issued 8/26/92.
     PA-23-150, -160, -235, -250
     Installation of an EQ1500 paralleling relay.

 SA8431SW:  Amended 1/6/94.
     PA-23, 23-160, -235, -250
     Installation of R15VON alternator controlunit.


Tribal Air/Communications, Inc., P.O. Box 370, Grant, NE69140

 SA1390CE:  Amended 8/6/79.
     PA-23-250
     Install 1/4-inch plywood flooring over existingfloor, remove 4  passenger seats, install reinforcement tubing.

 SA1391CE:  Amended 8/6/79.
     PA-23-250
     Cutting and reattaching the left and rightlower engine cowling  with AN 2700-4 cam locks.


Tulsa Airmotive, Inc., P.O. Box 176, Broken Arrow, OK 74012

 SA280SW:
     PA-23 Series
     Forward fuselage section and long nose 30542-02.


Unison Industries,530 Blackhawk Park Avenue, Rockford, IL 61104

SA420CH:  Reissued 2/14/96.
    PA-23, PA-23-160
    Install Unison Limited Authority Spark Advance Regulatorignition system.

SA563CH:  Amended 6/20/97.
    PA-23, PA-23-160
    Authorizes installation of engines equipped w/ UnisonLimited Authority Spark Advance Regulator(LASAR TM ) ignition system w/Cylinder Head Temp. (CHT) monitoring capability on airframes w/ FAA approvedinstallations of AVCO Lycoming O-320, O-360, or IO-360 engines.

SA593CH:  Amended 5/12/97.
    PA-23, -23-160, -23-235, -23-250, -E23-250
    Install Unison SlickSTART tm magneto booster system.


United Scanning Technologies, 1900 S. Maxwell Road, Peoria,IL 61653

 SA1004GL:  Reissued & Amended 9/28/87.
     PA-23-250, -E23-250
     Install a FLIR 2000A pod and a miniature CCDcamera or a color TV  camera.


Universal Corporation, 730 Independent Ave., Grand Junction,CO 81505

SA1315WE:  Reissued 10/10/85.
    PA-23, -23-160, also 180 HP conversion, -235, -250,-250C
    Installation of Tri-Star Corp. mixture monitor (exhaustgas temperature probe, gage, and selector).


U.S. Air Source, Ltd., 3640 Atlanta Highway, Athens, GA 30604

SA1418SO:  Issued 3/10/83.
    PA-23 Series
    Replacement of Rotor Vanes in airborne 211CC and212CW vacuum pumps.


Vibration Isolation Products Corporation, 11275 San FernandoRd., San Fernando, CA 91340

 SA1845WE:  Reissued 9/16/86.
 PA-23-235, -23-250
 Installation of VIP engine mount P/N VIP 50804-20.


Whelen Engr. Co., Inc.,Route 145, Winthrop Road, Chester, CT 06412-0684

SA615EA:  Amended 7/16/91.
    PA-23, 23-160, 23-235, 23-250, E23-250
    Installation of Whelen anti-collision strobe lightsystem. Models HD, HR, HR-DF-A, or HS (-14 (14V)or -28 (28V)), as replacementfor originally installed anti-collision lights.

SA800EA:  Amended 11/22/93.
    PA-23, 23-160, 23-235, 23-250, E23-250
    Installation of aviation white anti-collision strobelights. Whelen Models A429, A430, A434, A450, A470-R/W (red/white), A470A-R/W(red/white), A500, A625, or A650 and associated power supplies or ModelSA strobe light system.


Williams, Bob or Barbara, Box 608, Udall, KS 67146

 SA419CE:  Reissued 1/28/83.
     PA-23, -23-160;
     Installation of engines, propellers, and dorsalfin, and increase  takeoff weight.

 SA471CE:  Reissued 1/28/83.
     PA-23, -23-160;
     Installation of dorsal fin.

 SA495CE:  Amended 8/24/89.
     PA-23-235, -250
     Installation of Hartzell Model HC-A3XK-2B/7636D-4or HC-A3VK- 2B/V7636N-4 three-bladed propellers.


Winnen, Richard P., 21318 Grace Avenue, Torrance, CA 90510.

SA1177WE:
    PA-23 Series
    WECO carburetor temperature


Winslow Aerofilter Corp., 4069 Hollis Street, Oakland, CA94608

 SA4-652:
     PA-23 Series
     Full flow aerofilter kit 3-1A101.


Woodward Governor Co.,P.O. Box 7014, Rockford, IL 61125-7014

SA20GL:  Amended 12/16/85.
    PA-23-250, -E23-250
    Installation of Woodward Type II electronic propellersynchronizer or synchrophaser system.

SA300CE:  Amended 5/14/92.
    PA-23, PA-23-160,
    Installation of Woodward propeller governors onsingle and twin engine aircraft.

SA47CE:
    PA-23 Series
    Governor 210413.


Worldwide Aircraft Filter Corp., 1685 Abram Court, San Leandro,CA 94577

SA589WE:  Amended 3/7/74.
    PA-23, -160, -250
    Installation of full-flow lube oil filters on theaircraft for the benefit of the engine.
The Zee Company, Inc., 123 Braniff Drive, San Antonio, TX 78216
SA339SW:  Reissued 9/20/77.
PA-23 Series
Electrical hydraulic pump.


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