As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON PUSHBACK FROM GATE CREW RECEIVED NOSE STEERING INOP MESSAGE. AIRCRAFT STEERING MEL`D. AFTER TAKEOFF GEAR FAILED TO RETRACT. AIRCRAFT RETURNED TO ORIGINATING AIRPORT FOR NORMAL LANDING. MAINTENANCE TROUBLESHOOTING REPLACED HYD BALANCE RELIEF VALVE, NR 3 HYD SYSTEM BLED, GEAR SWINGS COMPLETED, AIRCRAFT RETURNED TO SERVICE. (NOTE: PART AT LAST REPAIR HAD BEEN RETURNED TO VENDOR AS CAUSING NOSE STEERING INOP (1875HR/853CY TSN) (TC NR 20070518009)