As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER STARTING RT ENGINE THE START BUTTON LIGHT COULD NOT BE EXTINGUISHED. AFTER SHUTDOWN THE RT ENGINE REMAINED SPOOLING AS THE STARTER WAS STILL ENGAGED AND THE BATTERY HAD TO BE DISCONNECTED TO TERMINATE THE STARTER. THE RT START RELAY WAS REPLACED AND OPERATIONAL CHECK OF THE START SYSTEM WAS SATISFACTORY.