As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND MAIN DK OXY ALERT PASS SIGN POWER CIRCUIT BREAKER POPPED. FOUND FORWARD OXY WARNING HORN WIRED TO MOUNTING BRACKET CAUSING DIRECT SHORT TO GROUND. RE-WIRED IN ACCORDANCE WITH IAI WDM 33-30-61. OPERATIONAL CHECK OF EMERGENCY EVACUATION SIGNAL IAW AMM 25-63-01 NOTED NO FAULTS.