SA02738CH (PAGE 2)Avionics
Installation of L-3 Communications Avionics Systems.
FAA holder: Acron Aviation Inc.
Aircraft STC directory
Piper Aircraft PA-23 STCs
The Jun 30, 2026 FAA DRS snapshot contains 41 selected supplemental type certificates with status Current whose public applicability data names the Piper Aircraft PA-23. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
41
listed Current at snapshot
20
holder directories
9
modification categories
Apr 1, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications15
Avionics10
Fuel systems5
Flight controls4
Aircraft structures3
Aircraft performance1
Landing gear and brakes1
Engine and powerplant1
Aircraft connectivity1
Recorded holders
Brittain Industries, Inc6Honeywell International Inc4Airline Fueling Inc.4Hartzell Engine Technologies, LLC3CiES Inc.2Garmin International Inc2BF Goodrich Aerospace2D'Shannon Products Ltd.2J P Instruments2Acron Aviation Inc.1Avidyne Corporation1Alpha Aviation Inc1Seaplanes North LLC1Storehouse LLC1Icarus Avionics, LLC1FFC Manufacturing1Garmin AT Inc.1Oilamatic Inc1Machen Inc1Aviation Research Corporation1
Recently revised PA-23 STCs
Showing the 41 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
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SA02511SE (2 OF 2)Fuel systems
Installation of replacement fuel quantity indicator sending unit(s).
FAA holder: CiES Inc.
SA02511SE (2 OF 3)Fuel systems
Installation of replacement fuel quantity indicator sending unit(s).
FAA holder: CiES Inc.
SA04192NYAvionics
KFD 900 Primary Flight Display System Additional Functions.
FAA holder: Honeywell International Inc
SA00401BO (PAGE 2)Other aircraft modifications
Installation of a SkyTrax100B UAT receiver.
FAA holder: Avidyne Corporation
SA01560WI-DAvionics
Installation of the Honeywell KFD 840 Primary Flight Display System.
FAA holder: Honeywell International Inc
SA02153LA-D PAGE 2Avionics
Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System.
FAA holder: Garmin International Inc.
SA01838WIAvionics
Installation of a FreeFlight 1201 GPS receiver, with an Avidyne AXP340 Transponder, for ADS-B Out.
FAA holder: Trego Dugan Aviation
SA617WEOther aircraft modifications
Installation of Brittain Industries, Inc., Pneumatic Pitch Assist Model PC-1.
FAA holder: Brittain Industries, Inc
SA02298CHOther aircraft modifications
Increase of a Three Point Torso Restraint System.
FAA holder: Alpha Aviation Inc
SA00944CHOther aircraft modifications
Replace Janitrol combustion heater Model 81D94-X (XX) with C&D Associates combustion heater Model CD25K, CD35K, and CD45K.
FAA holder: Hartzell Engine Technologies, LLC
SA00971CHOther aircraft modifications
Remove South Wind 940 series combustion heater and install C&D Associates, Inc. TSO-C20 approved Heater Kit 3 (P/N CD14010K3), Kit 4 (P/N CD12006K$), Kit 5 (P/N CD112145K5) or Kit 6 (P/N CD11215K6).
FAA holder: Hartzell Engine Technologies, LLC
SA01566CHOther aircraft modifications
Installation of C&D Associates Combustion Heater Kit.
FAA holder: Hartzell Engine Technologies, LLC
SA02212AK (PG 2)Other aircraft modifications
Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems.
FAA holder: Seaplanes North LLC
SA02121SE (PAGE 2)Other aircraft modifications
Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System.
FAA holder: Garmin International Inc
SA4178SWAvionics
Installation of 718-1 instrument panel assembly or optional 718-3 assembly.
FAA holder: Apache Modification Aircraft Corporation
SA551WEFlight controls
Installation of Brittain Model B-4 flight control system.
FAA holder: Brittain Industries, Inc
SA614WEAvionics
Installation of Brittain Industries, Inc., Model B-4 Flight Control System including PC-1 Pitch Assist, AH-1 Altitude Hold and NAV-1 Navigation Coupler.
FAA holder: Brittain Industries, Inc
SA1486WEFlight controls
Installation of Brittain Industries, Inc. Model B2C Flight Control System.
FAA holder: Brittain Industries, Inc
SA236CEAircraft structures
Installation of Hoskins Supplemental Model B High intensity wing tip lights, Model C tail lights, with or without Model 2 high intensity fuselage lights.
FAA holder: BF Goodrich Aerospace
SA398CEAircraft structures
Install Hoskins Twilighter MK III Supplemental Lighting System consisting of Model F Wing Lights with Model P or K (dual) Tail Light.
FAA holder: BF Goodrich Aerospace
SA2CEOther aircraft modifications
Installation of Doyn Model 1600 Dorsal Fin per Doyn Drawing No. 1600, Revision A, dated January 5, 1962.
FAA holder: D'Shannon Products Ltd.
SA00243BO (4 OF 5)Avionics
Installation of Centurion Consulting, Inc. GPS Steering Assist Module (SAM) with roll steering (p/n 0025-5100), or without roll steering (p/n 0025-5200).
FAA holder: Icarus Avionics, LLC
SA285CEAircraft performance
Installation of Lycoming IO-360-B1B engines and Hartzell HC-C2YR-2RA/7666A-2 propellers. Gross weight increase to 3684 lbs on PA-23 and 4000 lbs on PA-23-160. Data required: PA-23: Doyn dwg 1500, Rev. C, except for Hartzell HC-922K-2B/8447-12A props. Doyn dwg 1507, Rev. C, PA-23-160: Doyn dwg. 1800, Rev. C, except for Hartzell HC-922K-2B/8447-12A props. Dwg. 1807, Rev. C.
FAA holder: D'Shannon Products Ltd.
SA69SWOther aircraft modifications
Extended nose with baggage compartment.
FAA holder: Airline Fueling Inc.
SA01686SEEngine and powerplant
Fabrication and installation of engine control levers.
FAA holder: Apache Modification Aircraft Corporation
SA2586NM (PAGE 4)Other aircraft modifications
Installation of J.P. Instruments temperature monitoring systems.
FAA holder: J P Instruments
SA01105WI-D (2 OF 2)Avionics
Installation of Bendix/King KMD 550/850 Multi-Functional Display System with optional traffic, terrain and weather sensors. This STC applies to both single-engine and small multi-engine aircraft (see 1 of 2 for small twin-engine).
FAA holder: Honeywell International Inc.
SA882EAOther aircraft modifications
Installation of anti-collision strobe light kit Grimes P/N 30-0437-100.
FAA holder: Honeywell International Inc.
SA00861SE (PG 2)Fuel systems
Installation of J.P. Instruments (JPI) fuel flow indicating system in accordance with JPI Installation Manual FS-450, Report No. 400, Revision -, dated August 16, 2000, or later FAA approved revision.
FAA holder: J P Instruments
SA00448DEOther aircraft modifications
Installation of Oilamatic preoiler system.
FAA holder: Oilamatic Inc
SA00695SEOther aircraft modifications
Replacement of certain Rotomaster and Rayjay scavenge pumps.
FAA holder: Machen Inc
SA2914WEFlight controls
Installation of improved rudder trim tab actuating rod.
FAA holder: Aviation Research Corporation