As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT YYZ/LHR, ACFT DIVERTED TO YUL, DUE TO LT. ENGINE COMPRESSOR STALL. ENGINE SHUT DOWN. RESTARTED BUT HIGH VIBRATION, AND RISING EGT. SO ENGINE SHUT DOWN AGAIN.ACFT REMOVED FROM SERVICE TO CARRY OUT BOROSCOPE AND INVESTIGATION.