What was found
AIRCRAFT WAS GROUNDED: REACHING CRUISE ALT (330) FLIGHT DECK WENT COMPLETELY DARK. CRT S RECOVERED, GEN 1 FAULT, AC BUS 1 FAULT, BLUE HYDRAULIC SYSTEM LOST. AMONG OTHER FAILURES. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PHX WHERE IT LANDED SAFELY. ** SUPPLEMENTAL REPORT FOR AALA202206207788: A REVIEW OF THE DFDR DATA REVEALED THAT THE #1 GENERATOR FAILED BUT GENERATOR #2 NEVER PICKED UP THE SYSTEM LOAD. MAINTENANCE REPLACED #1 ENGINE INTEGRATED DRIVE GENERATOR (IDG) AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 24-21-51. MAINTENANCE COMPLETED OPERATIONAL TEST OF THE GENERATOR LINE CONTACTOR GLC-1 , OPERATIONAL CHECK OF EMERGENCY GENERATING SYSTEM, OPERATIONAL TEST OF THE TRANSFER INHIBITION, OPERATIONAL TEST OF THE EMERGENCY GENERATOR CONTROL UNIT GCU , OPERATIONAL CHECK OF AC ESS GENERATION SWITCHING AND THE OPERATIONAL TEST OF THE DC GENERATION SWITCHING ALL ABOVE OPERATIONAL CHECKS PASSED AND NO FAULTS NOTED. A SATISFACTORY FUNCTIONAL CHECK FLIGHT WAS ACCOMPLISHED WITH NO FAULTS NOTED** (CLOSED)