As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT END OF FLIGHT, PILOT SELECTED IDLE POSITION AND ENGINE REMAINED IN THE FLIGHT POSITION AND WAS SHUTDOWN FROM FLIGHT POSITION. A FAULT CODE WAS GENERATED THA THE START STOP SWITCH WAS DEFECTIVE IN SOME MANNER. A NEW ENGINE START STOP/ON OFF SWITCH WAS INSTALLED AND THE PROBLEM WAS CORRECTED. RECORDS INDICATED ATH 11 SWITCHES OF THIS TYPE HAVE BEEN REPLACED IN OUR FLEET WHICH HAS FLOWN NEARLY 50,000 HOURS TO DATE. (K)