As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - LT PACK OFF LIGHT ILLUM. EICAS MESSAGE L PACK OFF DISPLAYED. LIGHT DID NOT EXTINGUISH WHEN STBY SELECTED AND RESET PUSHED. PERFORMED LT PACK BITE CHECK IAW FIM 21-51000/101, FIG 103. NO FAULT SHOW. CYCLED PACK LT, SEVERAL TIMES. LT PACK WORKED NORMAL. LIGHT EXTINGUISHED. EICAS MSG DID NOT REAPPEAR.