What was found
BTV - ON 1A CHECK, FOUND EMERGENCY LIGHTING OPERATIONAL TEST FAILED. REMOVED AND REPLACED BATTERY PACK IN 10WL POWER SUPPLY. OPS CHECKED GOOD. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BTV - ON 1A CHECK, FOUND EMERGENCY LIGHTING OPERATIONAL TEST FAILED. REMOVED AND REPLACED BATTERY PACK IN 10WL POWER SUPPLY. OPS CHECKED GOOD. (M)