Skip to content
Fuel systems

STC SA2721WE

FAA DRS lists SA2721WE as Current · Reissued, held by United Aeronautical Corporation, for Boeing DC-6B. Recorded change: Install external retardant tank. Snapshot dated June 30, 2026.

FAA-listed holder
United Aeronautical Corporation
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Install external retardant tank.

SA2721WE 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 DC-6B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing DC-6B6A4

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing DC-6B 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