Oxygen — Oxygen Service Compartment Insufficient Water Drainage
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Bombardier BD-700-2A12 aircraft with serial numbers 70006 through 70059 must modify the oxygen service compartment door following Part A of Bombardier Service Bulletin 700-52-7508 Revision 1 or later approved revisions. This modification must be completed within 25 months from the effective date of 3 December 2021. Prior modifications done according to the basic issue of the service bulletin also satisfy the requirement.
Summary
Canadian Airworthiness Directive CF-2021-40 addresses an oxygen system issue on Bombardier Inc. model BD-700-2A12 aircraft, serial numbers 70006 through 70059. The directive mandates modifications to the oxygen service compartment door to improve water drainage. This action aims to prevent water accumulation that could cause oxygen leakage and fire risk.
What changed
CF-2021-40 introduces a new requirement to modify the oxygen service compartment door to provide sufficient water drainage. This modification is based on Bombardier Service Bulletin 700-52-7508 Revision 1 or later approved revisions. The directive does not require rework of the passenger door switch access panel described in the service bulletin.
Why it matters
This directive is critical for operators and maintenance organizations to prevent water accumulation in the oxygen service compartment, which could freeze and damage oxygen connections. Such damage poses a fire hazard due to potential oxygen leaks near ignition sources. Compliance ensures continued airworthiness and safety of affected Bombardier BD-700-2A12 aircraft.
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