STC ST04420AT
FAA DRS lists ST04420AT as Current · Reissued, held by Woven Electronics LLC, for Boeing 757-200 Series and Boeing 757-300 Series. Recorded change: Installation of the Rockwell Collins TTR-2100/TTR-921 Traffic Alert & Collision Avoidance System (TCAS), Version 7.1, and the TPR-901 Mode S Transponder. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of the Rockwell Collins TTR-2100/TTR-921 Traffic Alert & Collision Avoidance System (TCAS), Version 7.1, and the TPR-901 Mode S Transponder.
ST04420AT 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 757-200 Series and Boeing 757-300 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Boeing 757-200 Series and Boeing 757-300 Series 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
Installation of modified avionics system.
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Installation of a TACAN System to provide a second TACAN navigation data source independent of the existing system.
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To provide VHF navigation radios that are FM immunity compliant for travel in European airspace.
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MCS HF ALE radio upgrade consisting of the replacement of four (4) existing ARC-207 HF radios with HF-121C HF ALE capable radios and the addition of a switch panel and a relay/switch box to the MCS console.
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