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Other aircraft modifications

STC SE02051AK

FAA DRS lists SE02051AK as Current · Reissued, held by Custom Aircraft Inc, for Textron Lycoming AVCO O-540-J3A5D, Textron Lycoming AVCO O-540-J1A5D, and Textron Lycoming AVCO O-540-J3C5D. Recorded change: Grind nitrided high compression cylinder barrels to plus 0.010 overside and install P10 piston, P10 compression rings, and P10 oil rings. Snapshot dated June 30, 2026.

FAA-listed holder
Custom Aircraft Inc
Aircraft configurations
3
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Grind nitrided high compression cylinder barrels to plus 0.010 overside and install P10 piston, P10 compression rings, and P10 oil rings.

SE02051AK 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: Textron Lycoming AVCO O-540-J3A5D, Textron Lycoming AVCO O-540-J1A5D, and Textron Lycoming AVCO O-540-J3C5D. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Lycoming AVCO O-540-J3A5DE-295
Textron Lycoming AVCO O-540-J1A5DE-295
Textron Lycoming AVCO O-540-J3C5DE-295

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Lycoming AVCO O-540-J3A5D and Textron Lycoming AVCO O-540-J1A5D, and 1 more aircraft configuration 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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