SA01844WIFlight controls
Installation of Garmin GFC 600 Automatic Flight Control System.
FAA holder: Garmin International Inc.
Aircraft STC directory
Piper Aircraft PA-31-300 STCs
The Jun 30, 2026 FAA DRS snapshot contains 37 selected supplemental type certificates with status Current whose public applicability data names the 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.
37
listed Current at snapshot
19
holder directories
10
modification categories
May 14, 2026
latest recorded revision
Modification demand surface
Other aircraft modifications19
Flight controls3
Aircraft structures3
Fuel systems3
Cargo and special mission2
Landing gear and brakes2
Engine and powerplant2
Cabin and interiors1
Electrical systems1
Avionics1
Recorded holders
S-TEC Corporation4Garmin International Inc3FFC Manufacturing3Hartzell Engine Technologies, LLC2Aviation Fabricators Inc2Kaman Corporation Aircraft Wheel and Brake LLC1Honeywell International Inc (Bendix King)1Certex Aviation LLC1LifePort LLC1Spectrum Aeromed LLC dba Spectrum Aeromed1Knots 2U Ltd.1Goodrich Corporation1Seaplanes North LLC1Aerotech Components Inc1Mike Jones Aircraft Sales Inc.1Electronics International Inc.1Oilamatic Inc1Steinbach & Associates, Inc.1DeVore Aviation Corporation of America, a New Mexico Corporation1
Recently revised PA-31-300 STCs
Showing the 37 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA563GLOther aircraft modifications
Installation of Cleveland conversion kit, P/N 199-100.
FAA holder: Kaman Corporation Aircraft Wheel and Brake LLC
SA09856ACCabin and interiors
Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments.
FAA holder: Honeywell International Inc (Bendix King)
SA04083CHOther aircraft modifications
Installation of universal bracket and a sight/viewing hole in the front baggage compartment.
FAA holder: Certex Aviation LLC
SA09759DSFlight controls
Installation of an S-TEC 01326 Digital Flight Control System (DFCS).
FAA holder: S-TEC Corporation
SA00528SEElectrical systems
Installation of emergency medical stretcher and base, oxygen, and electrical systems.
FAA holder: LifePort LLC
SA02303NYCargo and special mission
Installation of a Single or Dual Port Fuselage Camera Hole Cutout.
FAA holder: Infinion Certification Engineering
SA1666GLCargo and special mission
Install air ambulance conversion.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
SA02153LA-D PAGE 2Avionics
Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System.
FAA holder: Garmin International Inc.
SA02495AKLanding gear and brakes
Modified landing gear warning system installed.
FAA holder: Warbelow's Air Ventures, Inc.
SA01935LAOther aircraft modifications
Installation of external aft body strakes.
FAA holder: Aircraft Performance Modifications
SA10594SCOther aircraft modifications
Modification of the Monroe Automotive Equipment Co. (MAECO) Shimmy Dampener.
FAA holder: Knots 2U, Ltd
SA04208CHOther aircraft modifications
Replacement of certain Goodrich pneumatic deicer boots.
FAA holder: Goodrich Corp.
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
SA01751CHOther aircraft modifications
Installation of C&D Associates auxiliary rear combustion heater Model CD35K heater kit, P/N CD12031K9.
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
SA02205AKLanding gear and brakes
Removal of Piper PA-31 series main landing gear inboard doors.
FAA holder: Arthur King
SA289CHOther aircraft modifications
Installation of Inline Pneumatic Air Filter, P/N CV1J4.
FAA holder: Aerotech Components Inc
SA02331AKAircraft structures
Installation of a Secondary Forward Baggage Door Latch in accordance with Plane Miracles LLC Master Data List, MDL1125AK, Revision IR, dated January 6, 2009, or later FAA approved revision.
FAA holder: Karl Zeiset
ST01494LA (PG 2)Other aircraft modifications
Installation of the FiberLite Aircraft Lighting System in accordance with Master Document List listed on Aircraft Model List (AML) Number ST01494LA, or later FAA approved revisions. No flight manual is required.
FAA holder: Superior Panel Technology
SA09285AC-DOther aircraft modifications
Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-727-20/30, according to Bulletin No. 827, Revision 6, dated 1-21-11 and Master Drawing List No. 921029, Revision F, dated 1-21-11 or later FAA Approved revisions of the above data (28 Volt System).
FAA holder: S-TEC Corporation
SA1421SOFlight controls
Installation of 40:1 gear ratio wing flap transmissions and related changes in accordance with Colemill Enterprises, Inc., Installation Instructions dated February 16, 1983, or later FAA approved revision. This modification provides and equivalent means of compliance with paragraphs (a)1, (a)2, and (a)4 of AD 82-27-13 and restores the 40 (full) flap travel.
FAA holder: Mike Jones Aircraft Sales Inc.
SA00961WIOther aircraft modifications
Stretcher installation per Aviation Fabricators STC Drawing List AF-204, Rev A, dtd 7/7/97, stamped "FAA Approved" with an approval date of 4/13/01 or later FAA approved revision.
FAA holder: Aviation Fabricators Inc
SA01143ATFuel systems
Installation of left hand side and right hand side main tank fuel cell assemblies. (PA-31-350 S/N 5 THRU 7300923).
FAA holder: FFC Manufacturing
SA01005ATFuel systems
Installation of left and right hand side fuel cell assemblies.
FAA holder: FFC Manufacturing
SA01988SE (PAGE 6)Engine and powerplant
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P.
FAA holder: Electronics International Inc.
SA240CHEngine and powerplant
Installation of Aero Crafters' exhaust heater system kit.
FAA holder: Aero Crafter Products Inc.
SA09397AC-DOther aircraft modifications
Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-849.
FAA holder: S-TEC Corporation
SA00448DEOther aircraft modifications
Installation of Oilamatic preoiler system.
FAA holder: Oilamatic Inc
SA09524SCOther aircraft modifications
Conversion of existing Piper air conditioning system from R12 to R134a refrigerant.
FAA holder: Steinbach & Associates, Inc.
SA00963WIOther aircraft modifications
Installation of a heated windshield panel.
FAA holder: Aviation Fabricators Inc
SA09298AC-DOther aircraft modifications
Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-751,.
FAA holder: S-TEC Corporation
SA1008EAOther aircraft modifications
Installation of single lamp logo light in horizontal tail.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation