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Other aircraft modifications

STC SA236CH

FAA DRS lists SA236CH as Current · Reissued, held by Twin Commander Aircraft LLC, for Twin Commander Aircraft 690A, Twin Commander Aircraft 690B, and Twin Commander Aircraft 690C, and 1 more aircraft configuration. Recorded change: Installation of Allied Signal, Inc., (Garrett) TPE331-10T series engines (-512K, -515K, or -516K in the 690A and 690B; -511K or -513K in the 690C and 690D) and related changes. Snapshot dated June 30, 2026.

FAA-listed holder
Twin Commander Aircraft LLC
Aircraft configurations
4
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Allied Signal, Inc., (Garrett) TPE331-10T series engines (-512K, -515K, or -516K in the 690A and 690B; -511K or -513K in the 690C and 690D) and related changes.

SA236CH 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 690A, Twin Commander Aircraft 690B, and Twin Commander Aircraft 690C, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Twin Commander Aircraft 690A2A4Twin Commander Aircraft 690B2A4Twin Commander Aircraft 690C2A4Twin Commander Aircraft 690D2A4

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Twin Commander Aircraft 690A and Twin Commander Aircraft 690B, and 2 more aircraft configurations 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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