As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD POPPING NOISE HEARD WHEN LEFT FLAP WAS EXTENDED OR RETRACTED. AT AFT WING SPAR STATION 908 FOUND REAR SPAR DEFLECTION CONTROL TRACK SUPPORT FOR OUTBOARD TRAILING EDGE FLAP BROKEN OFF AT SPAR SIDE LOWER LOBE ATTACH FITTING. REMOVED AND REPLACED OUTBOARD FLAP OUTBOARD TRACK ATTACH FITTING ON LEFT WING IAW B767 SRM 51-40-02, ACFT WAS GROUNDED.