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Engine and powerplant

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.

FAA-listed holder
Continental Motors, Inc.
Aircraft configurations
9
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

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.

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.

Pratt & Whitney Division Military R-985 SeriesTC 5E-1Pratt & Whitney Division R-985 Series5E-1Pratt & Whitney Division Wasp Jr. B-4E-123Pratt & Whitney Division Wasp Jr. B-5E-123Pratt & Whitney Division Wasp Jr. SB-2E-123Pratt & Whitney Division Wasp Jr. SB-3E-123Pratt & Whitney Division Wasp Jr. SeriesE-123
Pratt & Whitney Division Wasp Jr. T1B2E-123
Pratt & Whitney Division Wasp Jr. T1B3E-123

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Pratt & Whitney Division Military R-985 Series and Pratt & Whitney Division R-985 Series, and 7 more aircraft configurations 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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