The Cebu (and I believe Bejaya) ATR 72-500 aircraft being delivered from 2008 will be equipped with PW 127M engines (same engine as next generation ATR –600) because the 100 % TRO take off operation, as opposed to 90% for the PW 127F) required for 900 mtr runway operation has to be counted for maintenance operation as it reduces the engine life.