STC ST00506DE-D
FAA DRS lists ST00506DE-D as Current · Reissued, held by Learjet Inc, for Learjet 55, Learjet 55B, and Learjet 55C. Recorded change: Installation of a Collins TCAS-4000 TCAS II system displayed on VSI/TRA indicators with dual Collins TDR-94D Mode S transponders. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of a Collins TCAS-4000 TCAS II system displayed on VSI/TRA indicators with dual Collins TDR-94D Mode S transponders.
ST00506DE-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 55, Learjet 55B, and Learjet 55C. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Learjet 55 and Learjet 55B, and 1 more aircraft configuration model, serial range, and configuration?
- 02Which configuration, parts, installation data, limitations, and ICAs 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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