STC SA4-1121
FAA DRS lists SA4-1121 as Current · Reissued, held by General Aviation Modifications Inc., for Navion Aircraft Navion B. Recorded change: Increase in allowable gross weight from 2850 to 3100 pounds per STC SA4-915 when equipped with 20 gallon wing-tip tanks (Brittain Aircraft P/N 1000) installed. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Increase in allowable gross weight from 2850 to 3100 pounds per STC SA4-915 when equipped with 20 gallon wing-tip tanks (Brittain Aircraft P/N 1000) installed.
SA4-1121 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: Navion Aircraft Navion B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Navion Aircraft Navion B model, serial range, and configuration?
- 02Which configuration, loads, materials, inspections, and damage limits apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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