As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS OPERATIONAL CHECK {B777-33-3-7030} - 2L EXTERIOR EMERGENCY LIGHT INOP SUSPECT ONE BATTERY PACK NEEDS REPLACED ABOVE DOOR 2L OVERHEAD WHEN RELAMED BULB TRY TO COME ON. SWAPPED BATTS AT M33096 AND PANEL M33099 LIGHT OPS CK''D NORMAL. REMOVED AND REPLACED BOTH BATTERIES P/N''S AD-D717-01-100. (M33096 & M33099) BATTERIES REPLACED AND OPS CHECKS GOOD IAW AMM 33-51-06. OK FOR SERVICE AT THIS TIME.