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Avionics

STC ST04373CH

FAA DRS lists ST04373CH as Current · Issued, held by Aviation Communication and Surveillance Systems (ACSS) LLC, for Boeing 737-400 Series. Recorded change: Installation of an ACSS Automatic Dependent Surveillance-Broadcast (ADS-B) Out System in accordance with Aviation Communication & Surveillance Systems, LLC Index of Master Data List, Doc. No., 8921046, Revision -, dated March 25, 2019 or later FAA approved revision. Snapshot dated June 30, 2026.

FAA-listed holder
Aviation Communication and Surveillance Systems (ACSS) LLC
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of an ACSS Automatic Dependent Surveillance-Broadcast (ADS-B) Out System in accordance with Aviation Communication & Surveillance Systems, LLC Index of Master Data List, Doc. No., 8921046, Revision -, dated March 25, 2019 or later FAA approved revision.

ST04373CH 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 737-400 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-400 SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-400 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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