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Other aircraft modifications

STC SA637NW

FAA DRS lists SA637NW as Current · Reissued, held by Franklin Aircraft Engines Inc., for Maule Aerospace Technology M-4-180C, Maule Aerospace Technology M-4-180S, and Maule Aerospace Technology M-4-180T, and 25 more aircraft configurations. Recorded change: Installation of oil filter kit. Snapshot dated June 30, 2026.

FAA-listed holder
Franklin Aircraft Engines Inc.
Aircraft configurations
28
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of oil filter kit.

SA637NW 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: Maule Aerospace Technology M-4-180C, Maule Aerospace Technology M-4-180S, and Maule Aerospace Technology M-4-180T, and 25 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Maule Aerospace Technology M-4-180C3A23Maule Aerospace Technology M-4-180S3A23Maule Aerospace Technology M-4-180T3A23Maule Aerospace Technology M-4-2203A23Maule Aerospace Technology M-4-220C3A23Maule Aerospace Technology M-4-220S3A23Maule Aerospace Technology M-4-220T3A23Maule Aerospace Technology M-5-220C3A23Textron Aviation 172B3A12Textron Aviation 172C3A12Textron Aviation 172D3A12Textron Aviation 172E3A12Textron Aviation 172F (USAF T-41A)3A12Textron Aviation 172G3A12Textron Aviation 172H (USAF T-41A)3A12Textron Aviation 172I3A12Textron Aviation 172K3A12Textron Aviation 172L3A12Textron Aviation 172M3A12Textron Aviation 1753A17Textron Aviation 175A3A17Textron Aviation 175B3A17Textron Aviation 175C3A17Textron Aviation 170BA-799Univair Aircraft 108A-767Univair Aircraft 108-1A-767Univair Aircraft 108-2A-767Univair Aircraft 108-3A-767

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Maule Aerospace Technology M-4-180C and Maule Aerospace Technology M-4-180S, and 26 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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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