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Engine and powerplant

STC ST00013WI-D

FAA DRS lists ST00013WI-D as Current · Reissued, held by Duncan Aviation Inc, for Learjet 35, Learjet 35A (C-21A), and Learjet 36, and 4 more aircraft configurations. Recorded change: Installation of a modified engine bleed air mixing valve regulated air source. Snapshot dated June 30, 2026.

FAA-listed holder
Duncan Aviation Inc
Aircraft configurations
7
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of a modified engine bleed air mixing valve regulated air source.

ST00013WI-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: Learjet 35, Learjet 35A (C-21A), and Learjet 36, and 4 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet 35A10CELearjet 35A (C-21A)A10CELearjet 36A10CELearjet 36AA10CELearjet 55A10CELearjet 55BA10CELearjet 55CA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 35 and Learjet 35A (C-21A), and 5 more aircraft configurations model, serial range, and configuration?
  2. 02Which powerplant configuration, limits, instruments, and maintenance data 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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