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
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
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.
Buyer checks
Confirm before sourcing
Related fuel systems STCs
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Fabrication and installation of an internal fire retardant tank.
FAA holder: Croman Corporation
Installation of below the floor retardant tank.
FAA holder: Coulson Aviation (USA) Inc.