As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT OF NRT, CREW EXPERIENCED SEVERE WIND SHEAR AND A FLAP ASYMMETRY PROBLEM. OUTBOARD TRAILING EDGE FLAPS WOULD NOT RETRACT PASSED 5 DEGREES. AIRCRAFT RETURNED TO NRT. CONDITIONAL INSPECTIONS FOR HIGH ENERGY STOP AND SEVERE TURBULENCE WERE ACCOMPLISHED IAW AMM 05-51-03 AND 05-51-10. DURING TROUBLESHOOTING OF THE FLAP ISSUE THE RIGHT OUTBOARD FLAP RVDT WAS FOUND TO BE FAULTY AND REPLACED.