As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5845 - LGA-RDU - AFTER TAKEOFF, THE AIRCRAFTS NOSE LANDING GEAR WOULD NOT RETRACT. THE AIRCRAFT RETURNED TO THE FIELD WITHOUT INCIDENT. MAINTENANCE INSPECTED AND ADJUSTED THE PROXIMITY SWITCH AND SERVICED THE STRUT. OPS CHECKED GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)