EASA AD CF-2022-50
Oxygen — Passenger Oxygen System — Oxygen Dispensing Unit Lanyards Excessively Long
Summary
Canadian Airworthiness Directive CF-2022-50 addresses the issue of excessively long oxygen dispensing unit lanyards in passenger oxygen systems installed on Bombardier Inc. CL-600-1A11, CL-600-2A12, and CL-600-2B16 aircraft models. The directive mandates inspection and replacement of affected mask dispensing units to ensure proper oxygen flow during emergencies. This AD applies to specific serial numbers as identified in the relevant Bombardier service bulletins.
What Changed
CF-2022-50 introduces a new requirement for operators to verify the part numbers of drop-down oxygen boxes and conduct reach testing on passenger oxygen masks. If the masks fail testing, affected seats must be marked inoperative until the oxygen mask assemblies are replaced with units meeting ergonomic specifications. The directive also requires testing the oxygen supply system after replacement.
Why It Matters
This directive is critical for ensuring passenger safety by preventing oxygen flow failures during emergencies caused by overly long lanyards on oxygen masks. Compliance helps operators avoid in-flight safety hazards and regulatory penalties. Maintenance and compliance teams must update procedures to include the special checks, testing, and replacements mandated by this AD.
What To Do
Operators of affected Bombardier CL-600-1A11, CL-600-2A12, and CL-600-2B16 aircraft must perform the special check of oxygen mask part numbers and conduct reach testing within five years of the AD's effective date, September 8, 2022. Failed seats must be marked inoperative until the oxygen mask assemblies are replaced and the oxygen supply system is tested as per the applicable Bombardier service bulletin instructions.
Your fleet's weekly compliance brief
AI-summarized regulatory changes, compliance deadlines, and action items — filtered to your aircraft, every Monday.
AI-generated summary from official EASA source document. Always verify against the original.