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Other aircraft modifications

STC SA5990NM-D

FAA DRS lists SA5990NM-D as Current · Reissued, held by United Airlines Inc, for Boeing 767-300 Series and Boeing 767-200 Series. Recorded change: Modifies the aircraft to install a one way check valve in the yaw damper actuator hydraulic return port. The installation is in accordance with DAS-1-WE Approved United Air Lines Drawing List No. 5990 dated April 27, 1994, or later FAA approved revisions. Snapshot dated June 30, 2026.

FAA-listed holder
United Airlines Inc
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Modifies the aircraft to install a one way check valve in the yaw damper actuator hydraulic return port. The installation is in accordance with DAS-1-WE Approved United Air Lines Drawing List No. 5990 dated April 27, 1994, or later FAA approved revisions.

SA5990NM-D 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 767-300 Series and Boeing 767-200 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 767-300 SeriesA1NMBoeing 767-200 SeriesA1NM

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 767-300 Series and Boeing 767-200 Series 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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