STC SA4-683

Recorded modification

What the FAA record covers

SA4-683 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: Grumman American Aviation G-21 and Grumman American Aviation G-21A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

Confirm before sourcing

1. 01Does it cover the exact Grumman American Aviation G-21 and Grumman American Aviation G-21A model, serial range, and configuration?Copy
2. 02Which tanks, plumbing, usable-fuel assumptions, and inspections apply?Copy
3. 03Who can legally supply the design data, kit, instructions, and ICAs?Copy
4. 04What parts, labor, conformity, and return-to-service work are excluded?Copy

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