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Other aircraft modifications

STC ST53CH

FAA DRS lists ST53CH as Current · Surrendered, held by ABX Air Incorporated, for McDonnell Douglas DC-8-63F, McDonnell Douglas DC-8-63, and McDonnell Douglas DC-8-62F, and 3 more aircraft configurations. Recorded change: Replacement of McD PN 4642526 compressor check valve flapper assembly with ABX Air, PN A04574. Snapshot dated June 30, 2026.

FAA-listed holder
ABX Air Incorporated
Aircraft configurations
6
FAA revision date
FAA status
Current · Surrendered

Recorded modification

What the FAA record covers

Replacement of McD PN 4642526 compressor check valve flapper assembly with ABX Air, PN A04574.

ST53CH 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-8-63F, McDonnell Douglas DC-8-63, and McDonnell Douglas DC-8-62F, and 3 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

McDonnell Douglas DC-8-63F4A25McDonnell Douglas DC-8-634A25McDonnell Douglas DC-8-62F4A25McDonnell Douglas DC-8-624A25McDonnell Douglas DC-8-61F4A25McDonnell Douglas DC-8-614A25

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact McDonnell Douglas DC-8-63F and McDonnell Douglas DC-8-63, and 4 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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