Fire Protection — Baggage Compartment Fire Extinguishers — Inspection of the Baggage Bay Discharge Push-Button-Annunciator Switch
- Published
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- 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 70099 must inspect and test the baggage bay discharge PBA switch following the instructions in Bombardier Service Bulletin 700-26-7505. This action must be completed within 36 months from the effective date of 12 June 2023, unless already done. Any alternative means of compliance must be approved by Transport Canada Continuing Airworthiness authorities.
Summary
The Airworthiness Directive CF-2023-36 titled 'Fire Protection — Baggage Compartment Fire Extinguishers — Inspection of the Baggage Bay Discharge Push-Button-Annunciator Switch' applies to Bombardier Inc. model BD-700-2A12 aeroplanes with serial numbers 70006 through 70099. This directive mandates inspection and testing of the baggage bay discharge push-button-annunciator (PBA) switch to ensure proper electrical contact and functionality. The directive aims to prevent potential fire hazards in the baggage compartment caused by a failure of the fire extinguisher discharge system.
What changed
This new Airworthiness Directive introduces a requirement to inspect and test the baggage bay discharge PBA switch on specified Bombardier BD-700-2A12 aircraft. It addresses issues found during production where the switch was partially engaged or not fully locked, which could lead to loss of electrical contact and failure of the fire extinguisher system. The directive requires compliance with Bombardier Service Bulletin 700-26-7505 or later approved revisions.
Why it matters
This directive is critical for aviation professionals because it ensures the reliability of the baggage compartment fire extinguishing system, a key safety feature. Operators and maintenance organizations must verify the correct installation and function of the PBA switch to prevent undetected failures that could result in uncontrolled fires. Compliance helps maintain airworthiness and regulatory adherence, reducing safety risks and potential operational disruptions.
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