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Other aircraft modifications

STC SA2991SO

FAA DRS lists SA2991SO as Current · Reissued, held by Purolator Facet, Inc, for McDonnell Douglas DC-9-11, McDonnell Douglas DC-9-12, and McDonnell Douglas DC-9-13, and 21 more aircraft configurations. Recorded change: Installation of a replacement coalescer filter, P/N 21D10 or 21D10-1, or 21BC125.. Snapshot dated June 30, 2026.

FAA-listed holder
Purolator Facet, Inc
Aircraft configurations
24
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of a replacement coalescer filter, P/N 21D10 or 21D10-1, or 21BC125..

SA2991SO 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-9-11, McDonnell Douglas DC-9-12, and McDonnell Douglas DC-9-13, and 21 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

McDonnell Douglas DC-9-11A6WEMcDonnell Douglas DC-9-12A6WEMcDonnell Douglas DC-9-13A6WEMcDonnell Douglas DC-9-14A6WEMcDonnell Douglas DC-9-15A6WEMcDonnell Douglas DC-9-15FA6WEMcDonnell Douglas DC-9-21A6WEMcDonnell Douglas DC-9-31A6WEMcDonnell Douglas DC-9-32A6WEMcDonnell Douglas DC-9-32 (VC-9C)A6WEMcDonnell Douglas DC-9-32FA6WEMcDonnell Douglas DC-9-32F (C-9A)A6WEMcDonnell Douglas DC-9-32F (C-9B)A6WEMcDonnell Douglas DC-9-33FA6WEMcDonnell Douglas DC-9-34A6WEMcDonnell Douglas DC-9-34FA6WEMcDonnell Douglas DC-9-41A6WEMcDonnell Douglas DC-9-51A6WEMcDonnell Douglas DC-9-81A6WEMcDonnell Douglas DC-9-82A6WEMcDonnell Douglas DC-9-83A6WEMcDonnell Douglas DC-9-87A6WEMcDonnell Douglas MD-88A6WEMcDonnell Douglas MD-90-30A6WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact McDonnell Douglas DC-9-11 and McDonnell Douglas DC-9-12, and 22 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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