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Other aircraft modifications

STC SA4398SW

FAA DRS lists SA4398SW as Current · Reissued, held by Honeywell International Inc., for McDonnell Douglas DC-9 Series and McDonnell Douglas MD-88. Recorded change: Modification of air to air heat exchanger (P/N 179450-2-2 or194110-1). Snapshot dated June 30, 2026.

FAA-listed holder
Honeywell International Inc.
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Modification of air to air heat exchanger (P/N 179450-2-2 or194110-1).

SA4398SW 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 Series and McDonnell Douglas MD-88. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

McDonnell Douglas DC-9 SeriesA6WEMcDonnell Douglas MD-88A6WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact McDonnell Douglas DC-9 Series and McDonnell Douglas MD-88 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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