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Safety and emergency equipment

STC ST00581WI

FAA DRS lists ST00581WI as Current · Amended, held by Duncan Aviation Inc, for Learjet Learjet 55, Learjet Learjet 55C, and Learjet Learjet 55B. Recorded change: Installation of AlliedSignal MK-VII Ground Proximity and Windshear Warning System. Snapshot dated June 30, 2026.

FAA-listed holder
Duncan Aviation Inc
Aircraft configurations
3
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of AlliedSignal MK-VII Ground Proximity and Windshear Warning System.

ST00581WI 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 55, Learjet Learjet 55C, and Learjet Learjet 55B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet Learjet 55A10CELearjet Learjet 55CA10CELearjet Learjet 55BA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet Learjet 55 and Learjet Learjet 55C, and 1 more aircraft configuration 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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