Skip to content
Safety and emergency equipment

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
West Star Aviation
Aircraft configurations
4
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of B/E Aerospace Sweep-On 2000 Crew Oxygen Mask.

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.

Learjet 55A10CELearjet 55BA10CELearjet 55CA10CELearjet 60A10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 55 and Learjet 55B, and 2 more aircraft configurations model, serial range, and configuration?
  2. 02Which equipment, inspection intervals, procedures, and limitations 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?

Related safety and emergency equipment STCs