As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON REMOVAL OF THE APU FIRE BOTTLE FOR SCHEDULED WEIGHT CHECK ON GULFSTREAM GIV AIRCRAFT N936AM WORK ORDER SC23257 TASK 14.108, IT WAS NOTED TO BE EMPTY. THE ENGINEER INVOLVED IN THE APU FIRE BOTTLE REMOVAL INFORMS THE BOTTLE WAS NOT DISCHARGED WHILE UNDERGOING MAINTENANCE.