Pneumatic – Non-Conforming Bleed Leak Detection System Sensing Elements
Superseded. A newer version replaces this document.
- 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 must immediately prohibit installation of affected sensing elements unless verified as serviceable. For Group B aircraft manufactured on or before the effective date, maintenance records must be reviewed within 60 days to confirm installation status of affected parts. Additionally, from 90 days after the effective date, operational restrictions under specified MMEL items must be followed to ensure safe dispatch.
Summary
Canadian Airworthiness Directive CF-2022-36 addresses a safety issue on Bombardier Inc. model BD-700-2A12 aeroplanes, serial numbers 70005 and subsequent. It concerns non-conforming bleed leak detection system sensing elements that may have insufficient salt fill, potentially preventing detection of hot bleed air leaks. This directive imposes operational restrictions and maintenance requirements to mitigate risks associated with these defective sensing elements.
What changed
Airworthiness Directive CF-2022-36 introduces a prohibition on installing affected sensing elements with date codes before A2105 unless tested and marked as serviceable. It requires verification of maintenance records for certain aircraft and imposes Master Minimum Equipment List (MMEL) operational restrictions to ensure safe dispatch. This AD is an interim measure pending further regulatory action.
Why it matters
This directive is critical for aviation professionals because it addresses a latent safety risk that could lead to undetected hot bleed air leaks, potentially causing structural damage and compromising safe flight and landing. Operators and maintenance organizations must ensure compliance to avoid unsafe dispatch and maintain regulatory conformity. The AD impacts maintenance planning, parts management, and pre-flight operational checks.
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