As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF, WHEN GEAR RETRACTED HAD EVIDENCE OF NOISE AND VIBRATRION COMING FROM NOSE GEAR AREA. GEAR WAS RECYCLED AND ALL INDICATIONS WERE NORMAL. MAINTENANCE FOUND LT FORWARD NOSE GEAR DOOR MANUAL RELEASE MECHANISM STICKING INTERMITTENTLY. MAINTENANCE LUBED MANUAL RELEASE MECHANISM AND MANUALLY CYCLED DOOR SEVERAL TIMES IAW ALL APPLICABLE MANUALS. NO FURTHER DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.