Oil Debris MEL
An interesting MEL. Never heard of this one before.....
"an XXX Airlines A220-300, was conducting flight Flight 774 from AAA to BBB
The aircraft was being operated with a deferred MEL for the oil debris above limits on the right- hand engine. After departure, the advisory message ''oil debris'' for the right-hand engine illuminated on the EICAS. While in cruise flight at FL350, the flight crew received a repeated but intermittent, right-hand ''engine vibration'' caution message, along with a right-hand ''Fan VIB'' indication. The flight crew completed the abnormal checklist, discussed the situation with dispatch and maintenance control and elected to continue the flight towards BBB. In the vicinity of CCC, the right-hand engine failed and shut down automatically. The system attempted an auto-relight as designed but failed. The flight crew completed the checklist, declared a MAYDAY with ATC and elected to divert to CCC where it landed without further incident. Maintenance at CCC is investigating."