As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR RETRACTION, EXPERIENCED VIBRATION AND CREW ELECTED AS A PRECAUTIONARY MEASURE TO RETURN TO MAINTENANCE BASE. UPON LANDING DETERMINED THAT LEFT NOSE LANDING GEAR DOOR WAS NOT FULLY CLOSED. ADJUSTED LT NOSE GEAR DOOR LINK ROD ASSEMBLY; OPS CHECKED GOOD IAW MM32-22-01. RETRACTION TEST PERFORMED SATISFACTORILY.