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Safety and emergency equipment

STC ST00077WI

FAA DRS lists ST00077WI as Current · Amended, held by Duncan Aviation, Inc, for Learjet Learjet 36A, Learjet Learjet 36, and Learjet Learjet 35A (C-21A), and 1 more aircraft configuration. Recorded change: Installation of a Sundstrand Mark VII ground proximity/ windshear warning system. Snapshot dated June 30, 2026.

FAA-listed holder
Duncan Aviation, Inc
Aircraft configurations
4
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of a Sundstrand Mark VII ground proximity/ windshear warning system.

ST00077WI 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 36A, Learjet Learjet 36, and Learjet Learjet 35A (C-21A), and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet Learjet 36AA10CELearjet Learjet 36A10CELearjet Learjet 35A (C-21A)A10CELearjet Learjet 35A10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet Learjet 36A and Learjet Learjet 36, and 2 more aircraft configurations model, serial range, and configuration?
  2. 02Which equipment, inspection intervals, procedures, and limitations apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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