STC SA4558NM
FAA DRS lists SA4558NM as Current · Reissued, held by Northrop Grumman Systems Corporation, for Boeing 747-100 Series. Recorded change: Installation of LTN-92 Inertial Navigation Systems. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4558NM 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 747-100 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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Related avionics STCs
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Installation of a flight management system (FMS).
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