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Engine and powerplant

STC SA2-26

FAA DRS lists SA2-26 as Current · Reissued, held by Signature Flight Support Corporation, for Twin Commander Aircraft 680 and Twin Commander Aircraft 560-A. Recorded change: Installed 3/8 O.D. line from RH propeller governor pad on RH engine to LH propeller pad on LH engine. Snapshot dated June 30, 2026.

FAA-listed holder
Signature Flight Support Corporation
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installed 3/8 O.D. line from RH propeller governor pad on RH engine to LH propeller pad on LH engine.

SA2-26 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: Twin Commander Aircraft 680 and Twin Commander Aircraft 560-A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Twin Commander Aircraft 6802A4Twin Commander Aircraft 560-A6A1

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Twin Commander Aircraft 680 and Twin Commander Aircraft 560-A 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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