SA11300DSAvionics
Upgrade previously installed Collins Aerospace Radar Altimeter.
FAA holder: BHE & Associates Ltd.
Aircraft STC directory
Twin Commander Aircraft 680-FL(P) STCs
The Jun 30, 2026 FAA DRS snapshot contains 18 selected supplemental type certificates with status Current whose public applicability data names the Twin Commander Aircraft 680-FL(P). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
18
listed Current at snapshot
15
holder directories
7
modification categories
Jun 3, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications7
Avionics4
Engine and powerplant2
Fuel systems2
Landing gear and brakes1
Cargo and special mission1
Aircraft structures1
Recorded holders
Hartzell Engine Technologies, LLC2BHE & Associates LTD1Metrea Special Aerospace ISR Inc.1Acron Aviation Inc.1FTG, Inc.1Brittain Industries, Inc1Commuter Air Technology Inc1BF Goodrich Aerospace1P2 Incorporated1FFC Manufacturing1RPM Commander LLC1Saint-Gobain Performance Plastics Corp1Quiet Flight LLC1Signature Flight Support Corporation1DeVore Aviation Corporation of America, a New Mexico Corporation1
Recently revised 680-FL(P) STCs
Showing the 18 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA8408SWLanding gear and brakes
Replace the o-ring seals in the landing gear lower strut seal.
FAA holder: Metrea Special Aerospace ISR Inc.
SA02738CH (PAGE 3)Avionics
Installation of L-3 Communications Avionics Systems.
FAA holder: Acron Aviation Inc.
SA1686WEEngine and powerplant
Installation of Vibration Isolation Products (VIP) engine mount P/Ns VIP 50525-1 and VIP 50545-1 on various aircraft as shown on FAA Approved Model List (AML) No. SA1686WE.
FAA holder: FTG, Inc.
SA01660CHOther aircraft modifications
Remove Janitrol P/N C15C54 or Twin Commander P/N 88035-5 combustion heater and install C&D Associates, Inc. Model CD35K heater kit 10 P/N CD12043K10.
FAA holder: Hartzell Engine Technologies, LLC
SA02119CHOther aircraft modifications
Installation of C&D Associates Combustion Heater Kit 17 P/N CD14045K17.
FAA holder: Hartzell Engine Technologies, LLC
SA600WEAvionics
Installation of Brittain Industries, Inc. Model B-4 Flight Control System including Model PC-1 Pitch Assist, Model AH-1 Altitude Hold and NAV-1 Navigation Coupler.
FAA holder: Brittain Industries, Inc
SA404CEAircraft structures
Installation of Hoskins supplemental position light system which includes Model A wing tip lights and Model D or K(dual) tail light.
FAA holder: BF Goodrich Aerospace
SA02110CH (PAGE 4)Other aircraft modifications
Installation of a Time Trac Data Recorder.
FAA holder: P2 Incorporated
SA00794CHFuel systems
Replace Twin Commander fuel cap assembly with Shaw Aero Devices Fuel Cap (P/N 416-50) and adapter (P/N 416-938).
FAA holder: Commander Aero Inc
SA01956AT-DFuel systems
Installation of replacement fuel cell assemblies.
FAA holder: FFC Manufacturing
SA2891WEEngine and powerplant
Installation of Lycoming IO-720-B1B turbocharged engine.
FAA holder: RPM Commander LLC
SA1-143Other aircraft modifications
Installation of Chamberlain 2001X series radome kits.
FAA holder: Saint-Gobain Performance Plastics Corp
SA00481DEOther aircraft modifications
Installation of an Aircraft Noise Control (ANC) System.
FAA holder: Quiet Flight LLC
SA454SWOther aircraft modifications
Installation of windshield alcohol system.
FAA holder: Signature Flight Support Corporation
SA1017EAOther aircraft modifications
Installation of vertical tail floodlights.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation