STC SA4137NM
FAA DRS lists SA4137NM as Current · Reissued, held by Automatic Flagman Company, for Air Tractor AT-301. Recorded change: Installation of a Model 6 Automatic Flagman dispensor system on the upper surface of the right wing root. Snapshot dated June 30, 2026.
FAA-listed holder
Automatic Flagman Company
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
SA4137NM 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: Air Tractor AT-301. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related aircraft structures STCs
Fiberglass wing tips and wing tip landing lights.
FAA holder: Aircraft Lighting & Components
Installation of Fuselage Side Fairings.
FAA holder: Northrop Grumman Systems Corporation