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Aircraft STC directory

Sikorsky Aircraft S-61D STCs

The Jun 30, 2026 FAA DRS snapshot contains 5 selected supplemental type certificates with status Current whose public applicability data names the Sikorsky Aircraft S-61D. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

5
listed Current at snapshot
2
holder directories
3
modification categories
Nov 3, 2020
latest recorded revision

Modification demand surface

Other aircraft modifications3
Propellers1
Rotorcraft modifications1

Recorded holders

Carson Helicopters, Inc3National Aircraft Service Inc1

Recently revised S-61D STCs

Showing the 5 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.