As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF SELECTED GEAR UP, RECEIVED GEAR DISAGREE WARNING. THE PILOT REPORT THAT MANUAL RELEASE HANDLE WILL NOT STOW , LOST NOSE WHEEL STEERING TOWED BACK TO GATE. (EMERGENCY DECLARED -- ACFT RETURNED TO DEPARTURE AFTER T/O) R & R NLG SELECTOR VALVE ASSY IAW AMM 32-33-10, OPS CHECK AND LEAK CHECK IS GOOD, PERFORMED LANDING GEAR EXTENSION AND RETRACTION IAW AMM 32-30-00. OPS CHECK IS GOOD. CYCLE GEAR 15 TIMES.