STC ST04473AT
FAA DRS lists ST04473AT as Current · Issued, held by LB Aircraft Engineering Inc, for Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series. Recorded change: Replacement of the dual Honeywell or Collins Mode S transponders with a dual Honeywell TRA-100B Automatic Dependent Surveillance - Broadcast (ADS-B) Out System. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST04473AT 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: Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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Related avionics STCs
Installation of Honeywell Primus 880 Digital Weather Radar System.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
Installation of a second Rockwell Collins Mode-S transponder.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
Installation of L-3 Avionics Systems GH-3100.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
Installation of UNS-1F Flight Management System (FMS).
FAA holder: Aviation Systems Standards, Aircraft Maintenance and Engineering Division AVN-300