As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RETRACTING THE MLG WE FELT AND HEARD A LOUD VIBRATION THAT SEEMED TO BE COMING FROM THE NOSE GEAR. IT WAS ACCOMPANIED BY THE GEAR UNSAFE LIGHT FLASHING IN RHYTHM WITH THE SOUND THAT EVENTUALLY EXTINGUISHED WITH THE HYDRAULIC ANNUNCIATOR. REPLACED NLG UPLOCK BRACKET, OPS CHECK GOOD