SA1187CEAvionics
Installation of King Model KCS 55A pictorial navigation (compass) system with optional KA 52 autopilot adapter.
FAA holder: Honeywell International Inc
Aircraft STC directory
New Piper Aircraft PA-31-300 STCs
The Jun 30, 2026 FAA DRS snapshot contains 17 selected supplemental type certificates with status Current whose public applicability data names the New Piper Aircraft PA-31-300. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
17
listed Current at snapshot
12
holder directories
6
modification categories
Mar 31, 2020
latest recorded revision
Modification demand surface
Other aircraft modifications8
Cargo and special mission4
Avionics2
Cabin and interiors1
Aircraft structures1
Fuel systems1
Recently revised PA-31-300 STCs
Showing the 17 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA02118AKOther aircraft modifications
Installation of damage protection plates to the inboard, lower side of the flaps.
FAA holder: Hageland Aviation Services, Inc.
SA1035GLCargo and special mission
Install Egan Aviation Air Ambulance Stretcher P/N 125 using Installation Kit P/N 800.
FAA holder: Paul/ Lanna Egan LLC
SA00505SEOther aircraft modifications
Installation of SMR technologies pneumatic de-icers.
FAA holder: SMR Technologies Inc
SA00161BO (3 OF 3Avionics
Installation of Avidyne Corporation FlightMax 700-00007-( ) EX500 Multi-Function Display.
FAA holder: Avidyne Corporation
SA02004NYOther aircraft modifications
Installation of SMR Technologies pneumatic deicer models.
FAA holder: SMR Technologies Inc
SA02655AT (2 OF 2)Other aircraft modifications
Installation of JAARS Model F5K Automatic Flight Following System (AFFS) in Helio H-295 type aircraft.
FAA holder: JAARS Inc.
SA1130SWOther aircraft modifications
Installation of side facing seats in accordance with (1) Custom Aircraft Conversions, Inc. Drawing List 7057, Revision B, dated 3/20/70, and E.O. No. 2, dated 11/6/71; or (2) Aviation Fabricators, Inc. STC Drawing List AF-206, Rev. (D), dated 5/5/98, or later FAA approved revision.
FAA holder: Aviation Fabricators Inc
SA00057WICabin and interiors
Installation of single place composite commuter seats on the seat rail.
FAA holder: Aviation Fabricators Inc
SA1010NWCargo and special mission
Installation of a single or dual camera ports, optional camera door package, and associated components.
FAA holder: Hoogstra J. D.
SA603EAAircraft structures
Addition of a 32 inch high door on L.H. side of fuselage between fuselage stations 244 - 261 in accordance with drawings and instructions listed in: 1. Reading Aviation Service, Incorporated Drawing List No. 2276 Revision C dated April 10, 1970. 2. Reading Aviation Service, Incorporated Installation Instructions, Sheet No. N2276, Revision A dated June 27, 1968.
FAA holder: Black Cat Aviation Inc.
SA00801ATFuel systems
Installation of left hand and right hand fuel cell assemblies.
FAA holder: A/C Fuel Cells Worldwide
SA3401WEOther aircraft modifications
Installation of single piece windshield.
FAA holder: LP Aero Plastics
SA01384CHOther aircraft modifications
Installation of various de-icer harnesses.
FAA holder: SMR Technologies
ST09524SCOther aircraft modifications
Piper conversion of air conditioning systems from using R12 to R134a refrigerant on aircraft models listed. For PA-31-300 s/n 31-660, 31-712 thru 31-900, 31-7300901& up. For PA-31-325 sns 31-7400990 & up. PA-31-350 sns, 31-5001& 31-5003, 31-7305005 up.
FAA holder: Steinbach & Associates, Inc.