As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - FLT 9 - AFTER TAKEOFF AFTER GEAR RETRACTION STRONG VIBRATION FROM NOSE GEAR AREA. EXTENDED GEAR AND DUMPED FUEL. WHEN DUMPING FUEL ONLY RT DUMP VALVE OPENED, CHECKED CBS AND THEY WERE OK. AIRCRAFT RETURNED TO LAX, WHERE AN UNEVENTFUL LANDING WAS MADE. (M)