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Engine and powerplant

STC SA4387NM

FAA DRS lists SA4387NM as Current · Reissued, held by Air Mods NW, for True Flight Holdings AA-1B, True Flight Holdings AA-1A, and True Flight Holdings AA-1C, and 1 more aircraft configuration. Recorded change: Installation of Lycoming 0-320-A, C, or E series engine and a Sensenich 74DM6-0-58/64 or 74DM7-0-58/64 propeller. Snapshot dated June 30, 2026.

FAA-listed holder
Air Mods NW
Aircraft configurations
4
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Lycoming 0-320-A, C, or E series engine and a Sensenich 74DM6-0-58/64 or 74DM7-0-58/64 propeller.

SA4387NM 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: True Flight Holdings AA-1B, True Flight Holdings AA-1A, and True Flight Holdings AA-1C, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

True Flight Holdings AA-1BA11EATrue Flight Holdings AA-1AA11EATrue Flight Holdings AA-1CA11EATrue Flight Holdings AA-1A11EA

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact True Flight Holdings AA-1B and True Flight Holdings AA-1A, and 2 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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