As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - FLT 3536 - CREW REPORTED THAT THE NOSE LANDING GEAR DID NOT RETRACT WHEN THE GEAR HANDLE WAS SELECTED UP. THE CREW RECYCLED THE GEAR HANDLE AND THE NOSE GEAR RETRACTED. THE AIRCRAFT LANDED AT EWR WITHOUT FURTHER INCIDENT WHERE MAINTENANCE REMOVED AND REPLACED THE NOSE LANDING GEAR UPLOCK BOX. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RETURNED TO SERVICE.