EASA AD CF-2021-01
Fire Protection — Powerplant Fire Extinguishing (FIREX) Interconnection Hose Not Properly Installed
Summary
Canadian Airworthiness Directive CF-2021-01 addresses a fire protection issue related to the powerplant fire extinguishing (FIREX) interconnection hose installation on Airbus Canada Limited Partnership aircraft models BD-500-1A10 and BD-500-1A11. The directive applies to specific serial numbers of these models and mandates corrective action to ensure the FIREX hose is properly secured. This measure aims to prevent ineffective fire extinguishing in the event of a powerplant fire.
What Changed
CF-2021-01 introduces a requirement to replace the existing FIREX hose assembly part number 999D0007-503 with a newly designed hose assembly part number 999D0007-505 that includes provisions for safety cables at both ends. This change is intended to prevent the hose from becoming loose or disconnected, addressing reports of loose or disconnected hoses in service. The directive mandates compliance within 500 flight hours from its effective date.
Why It Matters
This directive is critical for aviation professionals because a loose or disconnected FIREX hose could prevent effective application of fire extinguishing agents during a powerplant fire, posing a significant safety risk. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. The update also helps reduce the risk of in-flight fire emergencies related to the powerplant fire suppression system.
What To Do
Operators of affected Airbus Canada BD-500-1A10 and BD-500-1A11 aircraft must replace each FIREX hose assembly P/N 999D0007-503 with the new assembly P/N 999D0007-505 that allows installation of safety cables. This replacement must be completed within 500 flight hours from 2021-01-22, the effective date of the directive. Compliance should follow the instructions in ACLP Service Bulletin BD500-262003, Issue 002 or later approved revisions.
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