Skip to content
Fuel systems

STC SA1944NW-D

FAA DRS lists SA1944NW-D as Current · Reissued, held by United Airlines Inc, for Boeing 737-100 Series. Recorded change: Retrofit of Smiths Industries Type 2123 fuel quantity indicators with Type 4211 capacitance trim units and a Type 4270 VTO relay module in the fuel quantity system in accordance with United Air Lines, DAS-1-WE, Approved Drawing List 1944 dated September 28, 1984, or later FAA approved revisions. Snapshot dated June 30, 2026.

FAA-listed holder
United Airlines Inc
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Retrofit of Smiths Industries Type 2123 fuel quantity indicators with Type 4211 capacitance trim units and a Type 4270 VTO relay module in the fuel quantity system in accordance with United Air Lines, DAS-1-WE, Approved Drawing List 1944 dated September 28, 1984, or later FAA approved revisions.

SA1944NW-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 737-100 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-100 SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-100 Series model, serial range, and configuration?
  2. 02Which tanks, plumbing, usable-fuel assumptions, and inspections 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?

Related fuel systems STCs