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Other aircraft modifications

STC ST301CH

FAA DRS lists ST301CH as Current · Amended, held by ElectroSonics, for Cessna Aircraft 500, Cessna Aircraft 550, and Cessna Aircraft S550, and 1 more aircraft configuration. Recorded change: Installation of an AlliedSignal CAS-67A TCAS II system. Snapshot dated June 30, 2026.

FAA-listed holder
Aircraft configurations
4
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

ST301CH 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: Cessna Aircraft 500, Cessna Aircraft 550, and Cessna Aircraft S550, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

Confirm before sourcing