As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE CREW REPORTED THAT THE PORTABLE FIRE EXTINGUISHER DISCHARGED SOME CHEMICAL BY ITSELF. IT WAS NOTED THE EXTINGUISHER WAS PROPERLY STORED AND PIN INSTALLED. THE EXTINGUISHER WAS SENT TO THE OVERHAUL AGENCY WHO REPORTED THE UNIT WAS IN PROPER CONDITION INTERNALLY AND THE LEVER HAD BEEN PRESSED. THE AGENCY ADVISED THAT IT WAS POSSIBLE TO TO HAVE SOME EXTINGUISHMENT BE DISCHARGED BECAUSE THE PIN IS PARTIALLY BENT.