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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 June 30, 2026.

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

Recorded modification

What the FAA record covers

Installation of Advanced Technology Aircraft Co. engine barrier filter.

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

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Bell Helicopter Textron 204B and Bell Helicopter Textron UH-1E, and 8 more aircraft configurations model, serial range, and configuration?
  2. 02Which powerplant configuration, limits, instruments, and maintenance data apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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