What was found
(CAN) ON TAXI CREW HAD A SUDDEN LOSS OF NOSE WHEEL STEERING WHICH REQUIRED SUDDEN BRAKING. LANDING GEAR SAFETY VALVE 49GA REPLACED IAW AMM 32-31-17, PB401. STEERING MODULE 6GC REPLACED IAW AMM 32-51-51, PB 401. OPS CHECK AND LEAK CHECK C/OUT OK , NOSE WHEEL STEERING SYS CHECK OK, SERVICEABLE.