What was found
EWR-PHX - FLT NR 16 - DURING CLIMB, GEAR DOOR MESSAGE APPEARED ON EICAS. CREW CYCLED GEAR AND RESET CIRCUIT BREAKERS WITH NO HELP. AIRCRAFT RETURNED TO EWR LANDING UNEVENTFULLY. CMH MAINTENANCE TECHS FOUND NLG SEQUENCING VALVE LOWER CRANK ASSEMBLY BROKEN. MAINTENANCE REPLACED VALVE ASSEMBLY PER MM 32-34-06. OPS CHECK OK PER MM 32-34-00. OVERWEIGHT INSPECTION C/W PER AWM386. AIRCRAFT RETURNED TO SERVICE. (M)