STC SA1-33
FAA DRS lists SA1-33 as Current · Reissued, held by McCauley Propeller Systems, for New Piper Aircraft PA-18-\"135\" (Army L-21B). Recorded change: McCauley fixed pitch MET-L-PROP1A170/GM7450 and 1A170/GM7452 with Lycoming O-290-D2 engine. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
McCauley fixed pitch MET-L-PROP1A170/GM7450 and 1A170/GM7452 with Lycoming O-290-D2 engine.
SA1-33 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: New Piper Aircraft PA-18-\"135\" (Army L-21B). Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact New Piper Aircraft PA-18-\"135\" (Army L-21B) model, serial range, and configuration?
- 02Which powerplant configuration, limits, instruments, and maintenance data apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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