What was found
WHILE PERFORMING W/C 0591-0115 BATTERY PACKS 13WL, 16WL, 17WL, AND 19WL FAILED. REPLACED BATTERY PACKS 13WL, 16WL, 17WL, AND 19WL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE PERFORMING W/C 0591-0115 BATTERY PACKS 13WL, 16WL, 17WL, AND 19WL FAILED. REPLACED BATTERY PACKS 13WL, 16WL, 17WL, AND 19WL.