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Engine and powerplant

STC SH5690NM

FAA DRS lists SH5690NM as Current · Reissued, held by WSH, LLC, for Bell Helicopter Textron 204B, Bell Helicopter Textron UH-1E, and International Helicopters UH-1B, and 7 more aircraft configurations. Recorded change: Installation of Advanced Technology Aircraft Co. engine barrier filter. Snapshot dated September 1, 2026.

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FAA-listed holder
WSH, LLC
Aircraft configurations
10
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

SH5690NM identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Bell Helicopter Textron 204B, Bell Helicopter Textron UH-1E, and International Helicopters UH-1B, and 7 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Bell Helicopter Textron 204BH1SWBell Helicopter Textron UH-1EH4NMInternational Helicopters UH-1BH5SOOverseas Aircraft Support UH-1EH7SORichards Heavylift Helo UH-1BH3SORotorcraft Development UH-1BH13WERotorcraft Development UH-1EH5NMSan Joaquin Helicopters UH-1BH1RMSmith Helicopters UH-1EH8NM
West Coast Fabrications UH-1EH9NM

Related engine and powerplant STCs

FAA record reference

STC number
SH5690NM
Product
Aircraft · Rotorcraft
Country
United States
Application date
August 13, 1991
Revision date
February 5, 2022
CFR references
Part 21