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Safety and emergency equipment

STC ST00678CH

FAA DRS lists ST00678CH as Current · Reissued, held by ElectroSonics, for Learjet Learjet 35 and Learjet Learjet 35A (C-21A). Recorded change: Installation of AlliedSignal Mark VII ground proximity warning system with windshear advisories. Snapshot dated June 30, 2026.

FAA-listed holder
ElectroSonics
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

ST00678CH 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: Learjet Learjet 35 and Learjet Learjet 35A (C-21A). Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet Learjet 35A10CELearjet Learjet 35A (C-21A)A10CE

Buyer checks

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