As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRBORNE RETURN DUE TO THE NOSE GEAR NOT RETRACTING. NO EMERGENCY WAS DECLARED. IAW TSM 32-31-00-810-865A EXCESSIVE GREASE REMOVED FROM NLG UPLOCK. NLG FUNCTIONED IAW AMM 32-31-00-720-003A IN HANGER, NLG UP 9 SECS. NLG DWN 13 SECS.