STC ST00447DE
FAA DRS lists ST00447DE as Current · Issued, held by West Star Aviation, for Learjet 55, Learjet 55B, and Learjet 55C, and 1 more aircraft configuration. Recorded change: Installation of B/E Aerospace Sweep-On 2000 Crew Oxygen Mask. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
4
FAA revision date
FAA status
Current · Issued
Recorded modification
What the FAA record covers
ST00447DE 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, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
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