EASA SIB 2007-15R1
Transport Canada Alert AL-2007-02 - Bombardier CL-600-2B19 "Regional Jet" aeroplanes - Thrust Reverser Access Cowls Separation
Summary
Transport Canada Alert AL-2007-02 is a Service Difficulty Alert concerning the Bombardier CL-600-2B19 "Regional Jet" aircraft. It addresses the issue of thrust reverser access cowls separating during flight due to defective or improperly engaged Camloc fasteners. The alert references related Bombardier service letters and bulletins to highlight the safety concern and maintenance implications.
What Changed
This alert introduces awareness of potential in-flight separation of engine access cowls caused by maintenance errors or design susceptibilities in the Camloc fastener assemblies. It highlights incidents reported by operators and recommends a review of cowl attachment design and installation procedures to mitigate these risks. Transport Canada is collaborating with the type certificate holder to develop corrective actions.
Why It Matters
This alert is critical for aviation professionals because in-flight separation of engine cowls can cause structural damage to the aircraft, posing safety hazards. Operators, maintenance organizations, and compliance teams must be vigilant in inspecting and properly engaging Camloc fasteners to prevent such events. Understanding this issue helps ensure continued airworthiness and reduces the risk of costly damage or incidents.
What To Do
Affected stakeholders should comply with Bombardier Service Bulletins 601R-71-030 and CF34-NAC-71-036, the In-Service Activities Report No. 2004-07-7110, and Service Letter RJ-SL-71-006 dated September 7, 2005. Maintenance personnel must carefully inspect studs, grommets, and Camloc fasteners for wear or damage and verify proper engagement during cowl installation. Any malfunctions or defects should be reported to Transport Canada via the Service Difficulty Reporting Program.
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