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Electrical systems

STC SH3744NM

FAA DRS lists SH3744NM as Current · Amended, held by WSH LLC, for Richards Heavylift Helo UH-1B, Rotorcraft Development UH-1B, and Red Tail Flying Services UH-1B, and 5 more aircraft configurations. Recorded change: Dual Battery Installation. Snapshot dated June 30, 2026.

FAA-listed holder
WSH LLC
Aircraft configurations
8
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Dual Battery Installation.

SH3744NM 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: Richards Heavylift Helo UH-1B, Rotorcraft Development UH-1B, and Red Tail Flying Services UH-1B, and 5 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Richards Heavylift Helo UH-1BH3SORotorcraft Development UH-1BH13WE
Red Tail Flying Services UH-1BR00012AT
WSH UH-1BH1RM
International Helicopters UH-1BH5SOSouthwest Florida Aviation International SW204 (UH-1B)H6SOSouthwest Florida Aviation International SW204HP (UH-1B)H6SOOverseas Aircraft Support UH-1BH7SO

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Richards Heavylift Helo UH-1B and Rotorcraft Development UH-1B, and 6 more aircraft configurations model, serial range, and configuration?
  2. 02Which load analysis, wiring changes, protection, and limitations 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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