EASA AD CF-2022-42
Fire Protection — Lavatory Smoke Detector — Operational Check of the Lavatory Smoke Detector
Summary
The Canadian Airworthiness Directive CF-2022-42 addresses fire protection by mandating operational checks of lavatory smoke detectors on MHI RJ Aviation ULC model CL-600-2B19, CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25 aircraft. This directive updates maintenance requirements to replace daily flight crew testing with maintenance-performed operational checks. It aims to ensure timely detection of smoke or fire in lavatories by revising inspection intervals and procedures.
What Changed
CF-2022-42 introduces new Certification Maintenance Requirements (CMR) and revises Candidate Certification Maintenance Requirements (CCMR) intervals for lavatory smoke detector checks. It removes the flight crew's daily self-test requirement and transfers the operational check responsibility to maintenance personnel using updated Maintenance Task Cards and manuals. The directive mandates incorporation of these changes within specified deadlines.
Why It Matters
This directive improves safety by reducing false alarms and ensuring reliable smoke detector functionality in lavatories, which is critical for early fire detection. Operators and maintenance organizations must update their maintenance programs to comply, preventing potential delays in fire response. Compliance ensures adherence to Canadian Aviation Regulations and avoids regulatory penalties or operational restrictions.
What To Do
Operators must incorporate the new or revised maintenance tasks and interval limitations into their Maintenance Requirements Manuals within 60 days of the directive's effective date. Initial operational checks of lavatory smoke detectors must be performed within 12 months, followed by recurring checks at specified intervals. Maintenance Task Cards must also be updated as per the directive to ensure compliance.
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