Oxygen — Crew — Inspection and Removal of a Protective End Cap Obstructing an Extraction Duct
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus Canada BD-500-1A10 and BD-500-1A11 aircraft must visually inspect the extraction duct under the flight deck floor and remove the protective end cap if present. This action must be completed before accumulating 1650 flight hours from June 9, 2020, or within 8 months of that date, whichever occurs first. The inspection and removal must follow the instructions in Airbus Canada Service Bulletin BD500-351004, Issue 001, or later approved revisions.
Summary
Canadian Airworthiness Directive CF-2020-19 mandates inspection and removal of a protective end cap obstructing an extraction duct on certain Airbus Canada Limited Partnership aircraft models BD-500-1A10 and BD-500-1A11. This directive addresses a safety issue related to crew oxygen systems and ventilation under the flight deck floor. The affected aircraft include specific serial numbers of the BD-500-1A10 and BD-500-1A11 models.
What changed
This new Airworthiness Directive introduces a mandatory inspection to identify and remove a foreign object damage protection cap that was not removed during final assembly. The cap obstructs an air extraction duct critical for ventilating electrical equipment and preventing oxygen build-up, which poses a fire risk. The directive requires compliance with Airbus Canada Service Bulletin BD500-351004 or approved revisions.
Why it matters
This directive is crucial for aviation professionals because it addresses a potential fire hazard caused by oxygen accumulation due to blocked ventilation ducts. Operators and maintenance teams must ensure the protective cap is removed to maintain safe oxygen system operation and electrical equipment cooling. Compliance helps prevent safety incidents and ensures adherence to Canadian Aviation Regulations.
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