What was found
RANDOM FIRE GONG WAS HEARD AFTER AIRCRAFT WAS RE POSITIONING TO THE HANGAR, PERFORMED FIRE EXTINGUISHING TEST. #1 ENGINE FAILS THE TEST
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
RANDOM FIRE GONG WAS HEARD AFTER AIRCRAFT WAS RE POSITIONING TO THE HANGAR, PERFORMED FIRE EXTINGUISHING TEST. #1 ENGINE FAILS THE TEST