As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IDG 2 CAUTION MSG POSTED WHILE IN CRUISE. LT ENGINE GENERATOR ALREADY DEFERRED. AIRCRAFT DIVERTED, DECLARED AN EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. MTCE REPLACED IDG NR 2 AND OPS CHECKED SERVICEABLE. LEFT ENGINE GENERATOR REMAINED DEFERRED. AIRCRAFT RETURNED TO SERVICE.