What was found
(CAN) FLIGHT CREW FROM ACFT, SN 4372, REPORTED PERSISTENT ERRATIC STEERING. MAINTENANCE CREW OF ACFT, SN 4372 REPORTED DURING PUSH FROM THE GATE THAT THE STEERING SYS WAS ARMED AND THE NOSE WHEEL TURNED IMMEDIATELY HARD LT, APPROXIMATELY 70 DEGREES, FLIGHT WAS CANCELLED. NWS FAILURE HAD NOT BEEN ANNUNCIATED.