STC SA04121CH
FAA DRS lists SA04121CH as Current · Amended, held by Svenn s Aviation LLC, for Piper Aircraft PA-18-105 (Special), Piper Aircraft PA-18-125 (Army L-21A), and Piper Aircraft PA-18-135, and 29 more aircraft configurations. Recorded change: Installation of Lycoming 0-320 engine. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA04121CH 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: Piper Aircraft PA-18-105 (Special), Piper Aircraft PA-18-125 (Army L-21A), and Piper Aircraft PA-18-135, and 29 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related engine and powerplant STCs
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Installation of TCM Model O-300-D engine.
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