As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WING AILERON #2 BALANCE BAY; 2EA. BALANCE WEIGHTS HAVE CORROSION. / REMOVED AND INSTALLED 2EA NEW BALANCE WEIGHTS IN L/H WING AILERON BALANCE BAY #2 IAW B737 20-50-11-910-801 TABLE 215; SRM 51-40-02-0G-0; SOPM 20-50-01. NO CHANGE IN WEIGHT A TAG UP1648 TW 20073 06/03/20; A TAG: UP1669