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Engine and powerplant

STC ST04233AT

FAA DRS lists ST04233AT as Current · Issued, held by Quiet Technology Aerospace, for Learjet 60. Recorded change: Replacement of the inner aluminum barrel of the engine inlet cowl, with an inlet barrel of carbon graphite sandwich construction, to provide a solution for in-service corrosion. Snapshot dated June 30, 2026.

FAA-listed holder
Quiet Technology Aerospace
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Replacement of the inner aluminum barrel of the engine inlet cowl, with an inlet barrel of carbon graphite sandwich construction, to provide a solution for in-service corrosion.

ST04233AT 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 60. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet 60A10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 60 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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