As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SVC CHK FOUND SEAT EMERGENCY LIGHTS OUT ON LEFT SIDE A/C BETWEEN SEATS 20-32. T/S REF B767-400 FRMFIM 33-51-00-815-803. R/R BATTERY PACK IN THE POWER SUPPLY REF B767-400 AMM 33-51. OPS CHK GOOD. OK FOR SVC. (8251500)(AIRCRAFT GROUNDED)