What was found
DURING PS1 INSPECTION FOUND BOTH OVERWING AFT EMER LIGHT INOPERATIVE. FURTHER TROUBLESHOOTING FOUND CONNECTOR P8503, PIN 9 PUSHED OUT & WILL NOT RESEAT. R & R CONNECTOR P8503 IAW ESPM 20-50-01, DID NOT FIX PROBLEM. R & R EPSU INVERTER 6 IAW AMM 33-50-11, DID NOT FIX. BATTERY CHARGER PN 11-0049 SN 13541, EMER LIGHTING BATTERY PN 2013-1A SN 71822. RT OVERWING EMER LIGHT WAS SHORTED. R & R EMER LIGHT ASSEMBLY IAW AMM 33-50-10. OPERATIONS CHECKED GOOD.