As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXCESSIVE VIBRATION CAUSED RETURN TO DFW. VIBRATION WAS EXCESSIVE AS LONG AS GEAR WAS RETRACTED. ON GEAR EXTENSION VIBRATION LESSENED.REMOVED LEFT HAND NOSE GEAR DOOR AND LT & RT AFT NOSE GEAR DOORS TO COMPLY WITH REVISED CDL 52-10 PER MM 32-00-00 PG 437 & 32-22-13. REF ITEM 1P L/P 216049. STATUS-OPEN.