STC SA4891NM
FAA DRS lists SA4891NM as Current · Reissued, held by ACSS (Aviation Communication and Surveillance Syst, for Boeing 727C Series, Boeing 727-100 Series, and Boeing 727, and 3 more aircraft configurations. Recorded change: Installation of Honeywell Vertical Speed Indicator/Traffic Resolution Advisory (VSI/TRA) display. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4891NM 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 727C Series, Boeing 727-100 Series, and Boeing 727, and 3 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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