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Engine and powerplant

STC SA903GL

FAA DRS lists SA903GL as Current · Reissued, held by Airwolf Filter Corp, for Ayres S2R. Recorded change: Installation of a spin-off filter assembly in the engine scavenge oil system. Snapshot dated June 30, 2026.

FAA-listed holder
Airwolf Filter Corp
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of a spin-off filter assembly in the engine scavenge oil system.

SA903GL 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: Ayres S2R. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Ayres S2RA3SW

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Ayres S2R 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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