As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PRE-FLIGHT TEST OF EMERGENCY LIGHTS AND FOLLOW UP OPERATION, THE RIGHT SIDE LIGHTS DID NOT REMAIN ILLUMINATED FOR MORE THAN A FEW SECONDS. THE LEFT SIDE WAS NORMAL. AMM 33-51-07-2 REPLACED M730 BATTERY PACK: SOURCE MANUFACTURING, OPS NORMAL. OK FOR SERVICE.