STC SA546GL
FAA DRS lists SA546GL as Current · Reissued, held by Twin Commander Aircraft LLC, for Twin Commander Aircraft 690, Twin Commander Aircraft 690A, and Twin Commander Aircraft 690B. Recorded change: Installation of Hartzell Model HC-B3TN-5FL/LT10673 or LT10673B propellers. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of Hartzell Model HC-B3TN-5FL/LT10673 or LT10673B propellers.
SA546GL 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 690, Twin Commander Aircraft 690A, and Twin Commander Aircraft 690B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Twin Commander Aircraft 690 and Twin Commander Aircraft 690A, and 1 more aircraft configuration 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?
Related other aircraft modifications STCs
Installation of expanded parameters Digital Flight Data Recorder from 6 parameters to 24 parameters.
FAA holder: L3 Communications/Aviation Recorders
Installation of an expanded, 17-parameters, Allied Signal, or Loral-Fairchild, Digital Flight Data Recorder (DFDR).
FAA holder: Acron Aviation Inc.
Increasing data recording parameters to 17/18 parameters on digital flight data recorders (DFDR), for L-3 Com (formerly Loral/Fairchild) DFDR, and Allied Signal DFDR part numbers identified by this STC,.
FAA holder: Acron Aviation Inc.
Installation of additional sensors for recording additional parameters on Digital Flight Data Recorder (DFDR).
FAA holder: Acron Aviation Inc.