What was found
IAD - EMERGENCY LANDING - FLT 859 - DURING CLIMB-OUT OF IAD, NR 2 GEN DROPPED OFF LINE. APU WAS ON MEL, INOPERATIVE. CREW RESET THE GENERATOR AND DIVERTED INTO CMH FOR PRECAUTIONARY REASONS, LANDING WAS UNEVENTFUL. MAINTENANCE RE-ISSUED APU MEL FOR BLEED AIR AND DIFFERED NR 2 ENGINE GENERATOR. CONTINUED ONTO PHX WITHOUT FURTHER EVENTS. .