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Aircraft STC directory

Textron Aviation 501 STCs

The Jun 30, 2026 FAA DRS snapshot contains 43 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 501. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

43
listed Current at snapshot
18
holder directories
10
modification categories
Oct 28, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications16
Avionics7
Cabin and interiors4
Electrical systems3
Landing gear and brakes3
Engine and powerplant3
Aircraft connectivity2
Fuel systems2
Aircraft structures2
Cargo and special mission1

Recorded holders

Sierra Industries Ltd.15Blackhawk Aerospace Technologies Inc.6Fliegen Works Inc.3JETTECH LLC2Kaman Corporation Aircraft Wheel and Brake LLC2Sierra Industries Inc2Liberty Partners Inc1Aircraft Systems and Manufacturing Inc1Summit Aviation Inc.1Aero-Mach Wilco LLC1Genesys Aerosystems Inc.1ELDEC Corporation1Carlisle Interconnect Technologies Inc.1Skyway Group Inc1Purolator Facet, Inc1Textron Aviation Inc1Teledyne Battery Products1Rockwell Collins Inc1

Recently revised 501 STCs

Showing the 43 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.