As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REMOVING HAND HELD FIRE EXTINGUISHER FROM THE COCKPIT FOR ROUTINE INSPECTION IT WAS NOTED THAT THE HANDLE DID NOT APPEAR TO BE CORRECT. FURTHER INSPECTION SHOWED THAT THERE ARE TABS ON THE LOWER HANDLE THAT WOULD HAVE PREVENTED THE EXTINGUISHER FROM DISCHARGING. NUMEROUS ATTEMPTS AT DISCHARGING FAILED. IT APPEARS THAT AN INCORRECT HEAD WAS INSTALLED. SUBJECT FIRE EXTINGUISHER WAS REMOVED FROM SERVICE. (K)