STC ST01231WI
FAA DRS lists ST01231WI as Current · Issued, held by Duncan Aviation Inc, for Learjet 55. Recorded change: Upgrade of dual Collins ADS-80 Air Data System for RVSM Capability. Data required: (1) Duncan Aviation Document List 031103026, Revision A, dated March 3, 2004; and (2) FAA Approved Flight Manual Supplement 031103030, dated March 3, 2004, or later FAA Approved revisions to (1) or (2). Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST01231WI 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: Learjet 55. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks