As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) MAIN HYDRAULIC BRAKE HOSE ASSEMBLY LEAKING EXCESSIVELY WHENEVER GEAR IS RETRACTED OR EXTENDED. AIRCRAFT HAD NO BRAKE PRESSURE AND HAD TO RETURN TO BASE, AND DECLARED EMERGENCY. THIS IS THE SECOND INCIDENT IN TWO DAYS INVOLVING THE SAME HOSE ASSEMBLY (DIFFERENT AIRCRAFT). HOSE RELACED, GEAR SWINGS CARRIED OUT AND SYSTEM CHECKED SERVICEABLE.