As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION IN CLIMBOUT AND LT GEAR WARNING LT AND GEAR HANDLE LIGHT TOGETHER INTERMITTENTLY. AIR RETURN. FOR VIBRATION AT 270 KNOTS WITH LT MLG UNSAFE INDICATION WITH GEAR HANDLE LIGHT. MAINTENANCE DUE TO VIBRATION, INSPECTED AND ADJUSTED SPOILER SEALS ON BOTH WINGS. DURING GEAR SWING, GEAR HANDLE LIGHTS REMAINED ILLUMINATED. REMOVED AND REPLACED LANDING GEAR HANDLE OPS CHECKED GOOD. OK FOR SERVICE. PN/ ON/OFF 6435-003-00 S/N ON 063-98 S/N OFF 100-99