STC SA4-577
FAA DRS lists SA4-577 as Current · Reissued, held by United Airlines Inc, for Boeing DC-6. Recorded change: Aileron trim control gearing modification. 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
SA4-577 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-6. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related flight controls STCs
Installation of the Garmin GFC 700 Automatic Flight Control System and TAWS Option.
FAA holder: Mooney Airplane Company Inc.