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Avionics

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.

FAA-listed holder
Avionics Support Group Inc.
Aircraft configurations
3
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

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.

Boeing 737-300 SeriesA16WEBoeing 737-400 SeriesA16WEBoeing 737-500 SeriesA16WE

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