Fire Protection — Visual Check of the Engine and Auxiliary Power Unit Fire Extinguishing Bottle Pressure Gauges — Airworthiness Limitations Implementation
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must incorporate CMR Tasks 26-20-00-101 and 26-20-00-102 into their Maintenance Requirements Manual within 60 days of the directive's effective date, 23 August 2022. Visual checks of the engine and APU fire extinguishing bottle pressure gauges must be performed within 5000 flight hours from 8 November 2021 and continued thereafter at intervals specified in the updated manual. Compliance with later approved revisions of the manual also satisfies this directive.
Summary
Canadian Airworthiness Directive CF-2022-43 mandates enhanced fire protection checks for MHI RJ Aviation ULC model CL-600 series aircraft, including CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25. The directive requires visual inspections of engine and Auxiliary Power Unit (APU) fire extinguishing bottle pressure gauges to ensure fire suppression capability. This directive implements new airworthiness limitations to maintain safety standards.
What changed
CF-2022-43 introduces Certification Maintenance Requirements (CMR) Tasks 26-20-00-101 and 26-20-00-102 for visual checks of engine and APU fire extinguishing bottle pressure gauges. It replaces the previous Maintenance Review Board Task 262000-201, which no longer meets certification requirements. The directive requires incorporation of these tasks into the Maintenance Requirements Manual Part 2 of CSP B-053 and adherence to specified inspection intervals.
Why it matters
This directive addresses a critical safety concern where failure to detect low or lost fire extinguishing agent pressure could result in an inability to extinguish engine or APU fires. For operators, maintenance organizations, and compliance teams, adhering to these updated inspection tasks ensures continued airworthiness and compliance with Canadian Aviation Regulations. It prevents potential fire suppression failures that could compromise aircraft safety.
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