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Aircraft STC directory

Atlantic Coast Seaplanes G-21G STCs

The Jun 30, 2026 FAA DRS snapshot contains 10 selected supplemental type certificates with status Current whose public applicability data names the Atlantic Coast Seaplanes G-21G. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

10
listed Current at snapshot
6
holder directories
6
modification categories
Dec 12, 2023
latest recorded revision

Modification demand surface

Avionics4Other aircraft modifications2Aircraft structures1Propellers1Electrical systems1Aircraft performance1

Recorded holders

Garmin International Inc3Teufel Nursery Inc2ADS-B Technologies, LLC1Andrew D. Humphrey1SMR Technologies1Razorback Fabrics Inc1

Recently revised G-21G STCs

Showing the 10 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.