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Avionics

STC ST01031WI

FAA DRS lists ST01031WI as Current · Issued, held by Duncan Aviation Inc, for Learjet 31A. Recorded change: Upgrade of existing Universal Avionics CVR-80 cockpit voice recorder to Universal CVR-30B or CVR-120. Snapshot dated June 30, 2026.

FAA-listed holder
Duncan Aviation Inc
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Upgrade of existing Universal Avionics CVR-80 cockpit voice recorder to Universal CVR-30B or CVR-120.

ST01031WI 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 31A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet 31AA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 31A model, serial range, and configuration?
  2. 02Which part numbers, software versions, interfaces, and manual changes 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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