What was found
FLIGHT CREW REPORTS GEAR DISAGREE WARNING ED1 DURING DEPARTURE AFTER GEAR RETRACTION. NO OVERWEIGHT NO HARD LANDING QRH COMPLETED. (FLIGHT 6400 - FILED CLOSED) UPON ARRIVAL TO AIRCRAFT, TALKED TO THE CREW AND THEY SAID THAT THE NLG WHEN RETRACTING TURNED RED. FOUND B1-007451 TROUBLESHOOT IN REF TO CRJ 700 FIM 32-21-00. CHECKED AFT NLG ATTACHMENT BRACKET TORQUE IN REF TO CRJ 700 AMM 32-21-22. TORQUE WAS GOOD. REMOVED AND REPLACED NLG RETRACT ACTUATOR IN REF TO CRJ 700 AMM 32-32-09. OPS CHECK AND LEAK CHECK GOOD AT THIS TIME.