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Aircraft performance

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.

FAA-listed holder
Staggerwing Museum Foundation Inc.
Aircraft configurations
7
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Dual airspeed system.

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.

Hawker Beechcraft Army AT-11A-2-582Hawker Beechcraft C18SA-757Hawker Beechcraft C-45GA-765Hawker Beechcraft C-45HA-765Hawker Beechcraft D18SA-765Hawker Beechcraft TC-45GA-765Hawker Beechcraft TC-45HA-765

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Hawker Beechcraft Army AT-11 and Hawker Beechcraft C18S, and 5 more aircraft configurations model, serial range, and configuration?
  2. 02Which limits, loading assumptions, performance data, and supplements 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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