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Avionics

STC ST04173CH

FAA DRS lists ST04173CH as Current · Issued, held by Astronics Armstrong Aerospace, for Boeing 757-200 Series. Recorded change: Installation of an Inflight Warning Systems Weather Radar Vibration Monitoring Unit System. Snapshot dated June 30, 2026.

FAA-listed holder
Astronics Armstrong Aerospace
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of an Inflight Warning Systems Weather Radar Vibration Monitoring Unit System.

ST04173CH 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. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 757-200 SeriesA2NM

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 757-200 Series 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?

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