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Aircraft STC directory

Bombardier DHC-6-300 STCs

The Jun 30, 2026 FAA DRS snapshot contains 31 selected supplemental type certificates with status Current whose public applicability data names the Bombardier DHC-6-300. 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
20
holder directories
9
modification categories
Sep 1, 2023
latest recorded revision

Modification demand surface

Other aircraft modifications11Avionics6Cabin and interiors3Propellers2Aircraft structures2Engine and powerplant2Safety and emergency equipment2Electrical systems2Aircraft connectivity1

Recorded holders

Rockwell Collins Inc3NOAA Aircraft Operations Center3Seaton Engineering Corp.2Gottlieb Corporation dba Air Transport Industries2Garmin AT Inc.2SMR Technologies Inc2Rocky Mountain Aircraft2Raisbeck Engineering Inc.1Chelton Flight Systems Inc.1Ontic Engineering and Manufacturing Inc.1Electronics International1Wipaire Inc1Thunder Bay Aviation Ltd1Avidyne Corporation1Western Avionics1JAARS Inc.1MidCanada Mod Center1Structural Integrity Engineering1JA Air Center1Rosen Sunvisor Systems LLC1

Recently revised DHC-6-300 STCs

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