STC ST04457AT
FAA DRS lists ST04457AT as Current · Issued, held by Avionics Support Group Inc., for Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series. Recorded change: Installation of the dual Rockwell Collins TPR-901, ADS-B out capable transponder system and dual GPS-4000S position sensor. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of the dual Rockwell Collins TPR-901, ADS-B out capable transponder system and dual GPS-4000S position sensor.
ST04457AT 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
Confirm before sourcing
- 01Does it cover the exact Boeing 737-300 Series and Boeing 737-400 Series, and 1 more aircraft configuration model, serial range, and configuration?
- 02Which part numbers, software versions, interfaces, and manual changes apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related avionics STCs
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Installation of Single or Dual Sandel SN4500 Primary Navigation Display(s) (EHSI) with optional SA4550\nprimary attitude display(s) (EADI).
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Weather Radar Upgrade in accordance with StandardAero Master Data List 1035391, Revision (B), dated December 13, 2019 or later FAA approved revision.
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