Action
Notice of proposed special conditions.
Summary
This action proposes special conditions for the SNECMA, Silvercrest-2 SC-2D engine model. This engine will have a novel or unusual design feature--an additional takeoff rating that increases the exhaust gas temperature (EGT) limit to maintain takeoff thrust in certain high ambient temperature conditions with one engine inoperative (OEI) for a maximum of 10 minutes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. The proposed 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.