Action
Notice of proposed special conditions.
Summary
This action proposes special conditions for the Pratt and Whitney Canada (PWC) model PW210S turboshaft engine. This engine model will have a novel or unusual design feature associated with engine operation in auxiliary power unit (APU) mode. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These proposed special conditions contain the added safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.