STC SE31WE
FAA DRS lists SE31WE as Current · Reissued, held by Continental Motors, Inc., for Pratt & Whitney Division Military R-985 Series, Pratt & Whitney Division R-985 Series, and Pratt & Whitney Division Wasp Jr. B-4, and 6 more aircraft configurations. Recorded change: Installation of Electro-Coatings, Inc. piston rings P/N 251822, 251824, and 251825 on Pratt and Whitney R-985 piston P/N 27056 for use with Channelcromium plated R-985 engine cylinders. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SE31WE 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 Military R-985 Series, Pratt & Whitney Division R-985 Series, and Pratt & Whitney Division Wasp Jr. B-4, and 6 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related engine and powerplant STCs
Twin-engine electronic sychronizer for aircraft equipped with Hartzell propellers.
FAA holder: Ontic Engineering and Manufacturing Inc.
Twin-engine synchronizer.
FAA holder: Ontic Engineering and Manufacturing Inc.
Twin-engine electronic sychronizer.
FAA holder: Ontic Engineering and Manufacturing Inc.
Twin engine synchronizer.
FAA holder: Ontic Engineering and Manufacturing Inc.
FAA record reference
- STC number
- SE31WE
- Product
- Engine
- Country
- United States
- Application date
- March 15, 1966
- Revision date
- October 31, 2016
- CFR references
- Part 13, Part 21