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Aircraft STC directory

Twin Commander Aircraft 690C STCs

The Jun 30, 2026 FAA DRS snapshot contains 31 selected supplemental type certificates with status Current whose public applicability data names the Twin Commander Aircraft 690C. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

31
listed Current at snapshot
19
holder directories
9
modification categories
Jun 3, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications11
Avionics7
Landing gear and brakes3
Flight controls2
Electrical systems2
Cargo and special mission2
Fuel systems2
Cabin and interiors1
Aircraft structures1

Recorded holders

Eagle Creek Aviation Services4S-TEC Corporation3Kaman Corporation Aircraft Wheel and Brake LLC2BHE & Associates LTD1Metrea Special Aerospace ISR Inc.1AeroMech Incorporated1Air Comm Corporation1LifePort LLC1Paul/ Lanna Egan LLC1Aircraft Components Inc1Twin Commander Aircraft LLC1Brittain Industries, Inc1Contact Aviation LLC1Fliegen Works Inc.1FFC Manufacturing1Aero Air, LLC1Quiet Flight LLC1DeVore Aviation Corporation of America, a New Mexico Corporation1SMR Technologies1

Recently revised 690C STCs

Showing the 31 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA1177GLElectrical systems

Install Aero Medical Products Mfg., Inc. Air Ambulance Stretcher P/N 125 using Installation Kit P/N 800 in accordance with Installation and Operating Instructions, Form EA 109K, dated April 23, 2001, or later FAA approved revisions. The Medical Oxygen System Kit P/N 807 is an FAA approved option. The Inverter/Pump Kit No. 812 may be installed in accordance with Inverter/Pump Installation Instructions, EA Form 170, dated June 9, 2001, or later FAA approved revisions.

FAA holder: Paul/ Lanna Egan LLC

View record