STC SA4-120
FAA DRS lists SA4-120 as Current · Reissued, held by Staggerwing Museum Foundation Inc., for Hawker Beechcraft Army AT-11, Hawker Beechcraft C18S, and Hawker Beechcraft C-45G, and 4 more aircraft configurations. Recorded change: Dual airspeed system. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4-120 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, Hawker Beechcraft C18S, and Hawker Beechcraft C-45G, and 4 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related aircraft performance STCs
Installation of Delco Performance Management System.
FAA holder: Boeing Company