STC SE4-864
FAA DRS lists SE4-864 as Current · Reissued, held by Covington Aircraft Engines, Inc., for Pratt & Whitney Division R-985 Series and Pratt & Whitney Division Wasp Jr. Series. Recorded change: Increase in impeller drive ratio from 10:1 to 12:1. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Increase in impeller drive ratio from 10:1 to 12:1.
SE4-864 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 R-985 Series and Pratt & Whitney Division Wasp Jr. Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Pratt & Whitney Division R-985 Series and Pratt & Whitney Division Wasp Jr. Series model, serial range, and configuration?
- 02Which configuration, parts, installation data, limitations, and ICAs apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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