Skip to content
Avionics

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.

FAA-listed holder
LB Aircraft Engineering Inc
Aircraft configurations
3
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Replacement of the dual Honeywell or Collins Mode S transponders with a dual Honeywell TRA-100B Automatic Dependent Surveillance - Broadcast (ADS-B) Out System.

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.

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

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-300 Series and Boeing 737-400 Series, and 1 more aircraft configuration model, serial range, and configuration?
  2. 02Which part numbers, software versions, interfaces, and manual changes apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

Related avionics STCs