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Aircraft STC directory

Air Tractor AT-504 STCs

The Jun 30, 2026 FAA DRS snapshot contains 29 selected supplemental type certificates with status Current whose public applicability data names the Air Tractor AT-504. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

29
listed Current at snapshot
16
holder directories
8
modification categories
Feb 27, 2026
latest recorded revision

Modification demand surface

Other aircraft modifications15
Avionics8
Aircraft structures1
Engine and powerplant1
Aircraft connectivity1
Landing gear and brakes1
Propellers1
Fuel systems1

Recorded holders

Reabe Design LLC4Garmin International Inc4Electronics International Inc.3Turbine Conversions Ltd3ADS-B Technologies, LLC2Acron Aviation Inc.1AeroLED's Holdings LLC1Kawak Aviation Technologies Inc1Latitude Technologies Corporation1Amtech Aeronautical Limited1Hershey Flying Service Inc1REB Technologies Inc1AMSAFE Inc.1Aero Innovations LLC1Micro AeroDynamics Inc1P2 Incorporated1

Recently revised AT-504 STCs

Showing the 29 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.