业界对CFM56发动机的PMA部件的发展持观望态度。航空发动机维修(MRO)是整个航空维修市场最大的成本支出,约占41%,而航材成本占发动机维修成本的83%。在劳动力成本只占发动机 The industry is on the lookout for the development of the PMA components of the CFM56 engine. Aero engine repair (MRO) is the largest cost of the entire aviation maintenance market, accounting for about 41%, while the aviation material costs accounted for 83% of the cost of engine maintenance. Labor costs only account for the engine