As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT GEN FAILED 55 MINUTES AFTER TAKEOFF. DEFINITE JOLT FELT. ATTEMPTED ONE RESET WITH SAME INTENSITY JOLT FELT. GEN DID NOT RESET. AN EMER WAS DECLARED & THE FLIGHT RETURNED WITHOUT FURTHER INCIDENT. R & R NR 1 IDG IAW AMM 24-11-01. OPERATIONAL & LEAK CHECKED OK. THE ACFT WAS GNDED.