What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: on climb-out of toronto, pilot heard a 'bang' similar to a compressor stall. Pilot noticed ignition was indicating on when not selected. Reduced power to idle for 2 minutes on left engine. All seemed normal. No vibration indicated and all fluid and pressure appeared normal. At 2 minutes, second 'bang' was heard and itt increased to redline, shut down engine. Uneventful landing at Buffalo. Left engine was in process of change; cause unknown. M&d filed. Encouraged operator to contact pmi and mido. This incident is considered closed.
As the FAA filed it
NARRATIVE: ON CLIMB-OUT OF TORONTO, PILOT HEARD A 'BANG' SIMILAR TO A COMPRESSOR STALL. PILOT NOTICED IGNITION WAS INDICATING ON WHEN NOT SELECTED. REDUCED POWER TO IDLE FOR 2 MINUTES ON LEFT ENGINE. ALL SEEMED NORMAL. NO VIBRATION INDICATED AND ALL FLUID AND PRESSURE APPEARED NORMAL. AT 2 MINUTES, SECOND 'BANG' WAS HEARD AND ITT INCREASED TO REDLINE, SHUT DOWN ENGINE. UNEVENTFUL LANDING AT BUFFALO. LEFT ENGINE WAS IN PROCESS OF CHANGE; CAUSE UNKNOWN. M&D FILED. ENCOURAGED OPERATOR TO CONTACT PMI AND MIDO. THIS INCIDENT IS CONSIDERED CLOSED.