STC ST04474AT
FAA DRS lists ST04474AT 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: Installation of Landing System Sensor Units (GLSSU), dual CMA-5025 GPS Landing System (GLS) Control Panels, dual low profile high-speed WAAS GPS/SBAS/GNSSU antennas, LPV/LP Level of Service annunciator lights and ILS/DME-ILS/SLS switch lights. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST04474AT 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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