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Other aircraft modifications

STC ST01820CH

FAA DRS lists ST01820CH as Current · Reissued, held by Aviation Communication and Surveillance Systems (ACSS) LLC, for McDonnell Douglas DC-9-81, McDonnell Douglas DC-9-82, and McDonnell Douglas DC-9-83, and 2 more aircraft configurations. Recorded change: Installation of Aviation Communication and Surveillance System TCAS provisions. Snapshot dated June 30, 2026.

FAA-listed holder
Aviation Communication and Surveillance Systems (ACSS) LLC
Aircraft configurations
5
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Aviation Communication and Surveillance System TCAS provisions.

ST01820CH 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: McDonnell Douglas DC-9-81, McDonnell Douglas DC-9-82, and McDonnell Douglas DC-9-83, and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

McDonnell Douglas DC-9-81A6WEMcDonnell Douglas DC-9-82A6WEMcDonnell Douglas DC-9-83A6WEMcDonnell Douglas DC-9-87A6WEMcDonnell Douglas MD-88A6WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact McDonnell Douglas DC-9-81 and McDonnell Douglas DC-9-82, and 3 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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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