What was found
DURING HEAVY MAINTENANCE, LIGHTING TEST FAILED, BATTERY AFT LT POSITION 13WL. TROUBLESHOT TO BATTERY AT POSITION 13L TO BE AT FAULT. R & R BATTERY AT POSITION 13WL IAW AMM 33-51-38. OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE, LIGHTING TEST FAILED, BATTERY AFT LT POSITION 13WL. TROUBLESHOT TO BATTERY AT POSITION 13L TO BE AT FAULT. R & R BATTERY AT POSITION 13WL IAW AMM 33-51-38. OPS CHECK GOOD.