What was found
AFTER TAKE-OFF THE FLIGHT HAD A FLAPS GEAR DRIVE FAILURE WITH THE FLAPS IN A POSITION BETWEEN 5 AND 20. FLIGHT WAS UNABLE TO CONTINUE TO DESTINATION AND RETURNED TO DEPARTURE. THE FLIGHT WAS APPROX 75000K OVERWEIGHT AND CREW CALLED A PAN PAN EMERGENCY FOR LANDING. AFTER LANDING SEVERAL TIRES DEFLATED, THE PASSENGERS WERE DEPLANED TO BUSSES AND FOR THE RETURN TO THE TERMINAL. NR 8 FLAP TRANSMISSION REPLACED. P/N LISTED ABOVE, S/N 0342. UNIT WAS INSTALLED IN JULY 7 2009, AND REMOVED AFTER INCIDENT. IT HAD 205 HRS SINCE INSTALLATION. UNIT MFR IS BOEING. ETQ RELIANCE INVESTIGATION NR 6638.