What was found
STEERING DISENGAGED MOMENTAIRILY FOR TWICE WHILE WAITING TO CROSS A RUNWAY. CYCLED THE PARKING BRAKE TO REGAIN STEERING. REMOVED FROM SERVICE. INTERROGATED CMC, NO CORRELATED MAINTENANCE MESSAGES/FC. PERFORMED STEERING HYDRAULIC SYSTEM OPS TEST, TEST PASSED. REF W/O 363694, N/R - 00001 FOR WORK PERFORMED. RETURNED TO SERVICE. NO PARTS REPLACED.