What was found
DURING PUSHBACK, ENGINE FAILED TO START. CHECK SYSTEM, FOUND NO POWER TO ENGINE,TRY TO REPLACE HMU ON HELP,KEEP TROUBLESHOOTING FOUND THE FIRE HANDLE SWITCH OPERATION WAS NOT WELL,REPLACED THE SWITCH AND SYSTEM OPERATION CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING PUSHBACK, ENGINE FAILED TO START. CHECK SYSTEM, FOUND NO POWER TO ENGINE,TRY TO REPLACE HMU ON HELP,KEEP TROUBLESHOOTING FOUND THE FIRE HANDLE SWITCH OPERATION WAS NOT WELL,REPLACED THE SWITCH AND SYSTEM OPERATION CHECK NORMAL.