STC SA4-423
FAA DRS lists SA4-423 as Current · Reissued, held by Brittain Industries, Inc, for Piper Aircraft PA-22-108, Piper Aircraft PA-22-135, and Piper Aircraft PA-22-150, and 2 more aircraft configurations. Recorded change: Installed Brittain Industries, Inc., B2D Flight Control System. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4-423 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-22-108, Piper Aircraft PA-22-135, and Piper Aircraft PA-22-150, and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related flight controls STCs
Installation of electric trim system.
FAA holder: Signature Flight Support Corporation
Installed a positive stop in the rudder system.
FAA holder: Signature Flight Support Corporation