What was found
NR 2 HYD PRESSURE AT 0. NR 2 HYD ISO, ROLL SPOILER HYD SPOILER OTBD. NR 2 RUDDER HYD CAUTION LIGHTS ILLUMINATED, CIRCUIT BREAKERS ALL IN. COMPLIED WITH FIM TASK 29-10-00-810-804, STEPS 1 THRU 4A (1) FOUND LARGE AMOUNT OF AIR IN NR 2 HYD SYSTEM, BLEED HYD SYS IAW AMM TASK 29-10-00-870-802, STEPS 1 TO 4C CHECKS NORMAL. RETURNED TO SERVICE.