As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5808 - PHL-STL - AFTER DEPARTURE FROM PHL, THE CREW REPORTED THE NOSE GEAR DOOR WOULD NOT CLOSE ON RETRACTION. THE CREW DECLARED AN EMERGENCY RETURNED TO THE FIELD. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NOSE PRIORITY VALVE, OPS CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)