As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE IN FLIGHT, CABIN PORTABLE FIRE EXTINGUISHER LOCATED BEHIND LAST ROW OF SEAT ON LH SIDE STARTED LEAKING EXTINGUISHING AGENT (HALON 1211). PLEASE NOTE THE PHOTO WHICH SHOWS THE O RING BETWEEN THE CYLINDER AND THE EXTINGUISHING HEAD/NOZZLE ASSY EXPOSED. IT APPEARS THAT THE HEAD ASSY HAD BACKED OFF FROM THE CYLINDER. THIS WAS WHERE THE EXTINGUISHING AGENT WAS REPORTED TO BE LEAKING FROM. (TC# 20190719010)