As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND LIGHTED EMERGENCY EXIT SIGNS ABOVE LEFT AND RIGHT FORWARD OVERWING EMERGENCY EXITS WILL NOT ILLUMINATE DURING TEST. BOTH LIGHTS ARE POWERED BY POWER SUPPLY B5-121. REPLACED EMERGENCY LIGHT BATTERY ASSEMBLY IN POWER SUPPLY B5-121 IN REF WITH B717 AMM 33- 51. OPERATIONAL TEST WAS GOOD. OK FOR SERVICE. (LP #8303514)