As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING GVI FOUND AFT CARGO R/H TRACK CORRODED STA 847 TO 787. GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMITS, REMOVED AND REPLACED CARGO TRACK I.A.W. B737-900ER SRM 51-42-02-0G-0 AND 51-40-05-0G-0 AND SRM 53-00-53-1A-2.W= 1' 0= .075 R=.033 L=1.5" D= .042.