What was found
ARRIVED AT AIRCRAFT TO FIND IRU HORN BLOWING, BATT SW ON, EMER PWR OFF AND EMER EXIT LIGHTS ILLUMINATED NO IDEAA HOW LONG AIRCRAFT WAS IN THIS CONDITION. REMOVED AND REPLACED MAIN A/C BATTERIES, FUNCTIONAL CHECK GOOD REF AMM 24-24.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ARRIVED AT AIRCRAFT TO FIND IRU HORN BLOWING, BATT SW ON, EMER PWR OFF AND EMER EXIT LIGHTS ILLUMINATED NO IDEAA HOW LONG AIRCRAFT WAS IN THIS CONDITION. REMOVED AND REPLACED MAIN A/C BATTERIES, FUNCTIONAL CHECK GOOD REF AMM 24-24.