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Propellers

STC SA551AL

FAA DRS lists SA551AL as Current · Reissued, held by Aircraft Innovations, LLC, for Piper Aircraft PA-18-135, Piper Aircraft PA-18-150, and Piper Aircraft PA-18A-135, and 5 more aircraft configurations. Recorded change: Installation of Day & Night 4-1 fiberglass propeller spinner. Snapshot dated June 30, 2026.

FAA-listed holder
Aircraft Innovations, LLC
Aircraft configurations
8
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Day & Night 4-1 fiberglass propeller spinner.

SA551AL 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: Piper Aircraft PA-18-135, Piper Aircraft PA-18-150, and Piper Aircraft PA-18A-135, and 5 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Piper Aircraft PA-18-1351A2Piper Aircraft PA-18-1501A2Piper Aircraft PA-18A-1351A2Piper Aircraft PA-18A-1501A2Piper Aircraft PA-18AS-1351A2Piper Aircraft PA-18AS-1501A2Piper Aircraft PA-18S-1351A2Piper Aircraft PA-18S-1501A2

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Piper Aircraft PA-18-135 and Piper Aircraft PA-18-150, and 6 more aircraft configurations model, serial range, and configuration?
  2. 02Which propeller, governor, spinner, engine, and vibration limits 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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