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Other aircraft modifications

STC SA08999AC-D

FAA DRS lists SA08999AC-D as Current · Amended, held by S-TEC Corporation, for Beechcraft 35-33, Beechcraft 35-A33, and Beechcraft 35-B33, and 9 more aircraft configurations. Recorded change: Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System,Model ST-583. Snapshot dated June 30, 2026.

FAA-listed holder
Aircraft configurations
12
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

SA08999AC-D 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: Beechcraft 35-33, Beechcraft 35-A33, and Beechcraft 35-B33, and 9 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

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