As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF FROM KPHL TO KTOL AND DURING GEAR RETRACTION CREW EXPERIENCED A NOISE AND VIBRATION COMING FROM THE NOSE GEAR AREA. THE GEAR WAS LEFT DOWN FOR THE REMAINDER OF FLT AND MADE AN UNEVENTFUL LANDING IN KTOL. MAINTENANCE FOUND SCREWS MISSING FROM RIGHT AFT PANEL IN NOSE WHEEL WELL. MAINTENANCE REPLACED SCREWS IAW ALL APPLICABLE MANUALS. AIRCRAFT WAS RETURNED TO SERVICE