What was found
DURING CRUISE, AIRCRAFT EXPERIENCED A LOSS OF BOTH PACKS. FLIGHT DESCENDED 12,000 FEET. NO EMERGENCY WAS DECLARED. QRH PROCEDURES WERE COMPLETED, AIR ENGINE 2 BLEED FAULT, ENGINE 1 BLEED VALVE FAILED AND CLOSED WITH ASSOCIATED ENGINE 1 BLEED, PACK 1, PACK 2. FLIGHT DIVERTED AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NR 1 ENGINE BLEED REGULATED PRESSURE TRANSDUCER PER AMM 36-11-16 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.