EASA AD CF-2022-32
Fire Protection — Fire Extinguishing System — Fire Extinguisher Bottle Tests Omitted (Cargo / Engine / Auxiliary Power Unit)
Summary
The Airworthiness Directive CF-2022-32 issued by Transport Canada addresses fire protection concerns related to fire extinguisher bottle tests omitted on Mitsubishi Heavy Industries RJ Aviation ULC models CL-600-2B19, CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25 aircraft. It mandates new maintenance tasks and interval limitations for the restoration and pressure switch testing of fire extinguisher bottles in cargo compartments, engines, and auxiliary power units (APUs).
What Changed
This directive introduces new Certification Maintenance Requirement (CMR) tasks for CL-600-2B19 aircraft and updates Candidate Certification Maintenance Requirement (CCMR) interval limitations for other CL-600 series models. It requires incorporation of specific temporary revisions to the Maintenance Review Manual and mandates restoration and pressure switch testing of fire extinguisher bottles that may have been previously omitted.
Why It Matters
The directive ensures the reliability and functionality of fire extinguishing systems by addressing potential lapses in the 10-year hydrostatic testing and pressure switch functional tests. Compliance is critical to prevent dormant loss of fire extinguishing capability, thereby enhancing safety and regulatory adherence for operators, maintenance organizations, and compliance teams.
What To Do
Operators must incorporate the new CMR and CCMR tasks into their maintenance programs within 60 days of the directive's effective date. They must perform the required restoration and pressure switch tests according to specified intervals, including phase-in periods and compliance with updated Maintenance Review Manual revisions approved by Transport Canada.
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