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Engine and powerplant

STC SE1-391

FAA DRS lists SE1-391 as Current · Reissued, held by Staggerwing Museum Foundation Inc., for Pratt & Whitney Division R-985 Series. Recorded change: Pratt & Whitney R-985 engine and ATI fuel injection. Snapshot dated June 30, 2026.

Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Pratt & Whitney R-985 engine and ATI fuel injection.

SE1-391 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: Pratt & Whitney Division R-985 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Pratt & Whitney Division R-985 Series 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?