As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BRAKE DE-ICE HOSE WAS FOUND TO BE BLOCKED DUE TO DETERIORATION OF THE INSIDE OF HOSE. THE UPPER FLEXIBLE HOSE WAS FOUND TO PASS SHOP AIR THROUGH AN AIR NOZZLE BUT WAS NOT FOUND TO PASS THE VOLUME SUPPLIED BY THE ENGINE BLEED AIR. THE LARGE VOLUME OF AIR BLOCKED THE INSIDE OF THE HOSE COMPLETELY AND WOULD NOT ALLOW THE LT BRAKE TO BE DE-ICED.