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Aircraft STC directory

Boeing DC3A-S4C4G STCs

The Jun 30, 2026 FAA DRS snapshot contains 64 selected supplemental type certificates with status Current whose public applicability data names the Boeing DC3A-S4C4G. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

64
listed Current at snapshot
12
holder directories
13
modification categories
Feb 21, 2022
latest recorded revision

Modification demand surface

Other aircraft modifications24
Aircraft structures7
Cabin and interiors6
Engine and powerplant6
Avionics4
Landing gear and brakes4
Electrical systems4
Fuel systems3
Flight controls2
Aircraft connectivity1
Safety and emergency equipment1
Propellers1
Cargo and special mission1

Recorded holders

Sabreliner Aviation LLC20Signature Flight Support Corporation18Preferred Improvements LLC13Basler Turbo Conversions LLC4Airwolf Filter Corporation1A & L Aircraft Parts Inc1Pro Star Aviation, LLC1StandardAero Business Aviation Services, LLC1United Aeronautical Corporation1Aviation Products Systems Inc.1Oilamatic Inc1Rockwell Collins Inc1

Recently revised DC3A-S4C4G STCs

Showing the 64 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.