Special Conditions: Bombardier Aerospace Model CL-600-2D24 (RJ900) Airplane; Sudden Engine Stoppage

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These special conditions are issued for the Bombardier Aerospace Model CL-600-2D24 (RJ900) airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes, associated with engine size and torque load which affects sudden engine stoppage. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.