STC ST00018MC-D
FAA DRS lists ST00018MC-D as Current · Reissued, held by Learjet Inc., for Learjet 35A (C-21A). Recorded change: Installation of the Universal Avionics Systems Corporation (UASC) UNS-1B Plus Flight Management System (FMS) Software Upgrade. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of the Universal Avionics Systems Corporation (UASC) UNS-1B Plus Flight Management System (FMS) Software Upgrade.
ST00018MC-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 35A (C-21A). Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Learjet 35A (C-21A) model, serial range, and configuration?
- 02Which part numbers, software versions, interfaces, and manual changes apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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