As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT L/H TRANSITION IS CORRODED FROM STA 727C-787. GROUNDED - YES. REMOVED AND REPLACED AFT PIT L/H TRANSITION FROM STA 727F TO 727C IAW B737-800 SRM 51-40-02-0G-0, TRANSITION FROM STA 727G TO STA 787 FOUND TO BE IN LIMITS IAW B737-800 SRM 53-00-53-1A-2W= 1" O= .040 R= .035 L= 1" D= .005.