STC SA4-128
FAA DRS lists SA4-128 as Current · Reissued, held by Staggerwing Museum Foundation Inc., for Hawker Beechcraft Army AT-11 and Hawker Beechcraft C18S. Recorded change: Engines, propellers, revised nacelles, wheel-well doors, air- speed system, fuel system and elevator seal strips. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4-128 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: Hawker Beechcraft Army AT-11 and Hawker Beechcraft C18S. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related landing gear and brakes STCs
Installation and replacement of Steel Brake Components.
FAA holder: NASCO Aircraft Brake Inc
Installation of Knots 2U, Ltd Wheel and Body Fairings.
FAA holder: Knots 2U Ltd.
Installation of locking tail wheel strut.
FAA holder: 195 FACTORY LLC, The