As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT ABORTED TAKEOFF DUE TO A DRAGGING BRAKE. UPON MAINTENANCE INSPECTION THE RT BRAKE MASTER CYLINDERS WERE FOUND AT FAULT. BRAKE PRESSURE COULD NOT BE RELEASED BY THE AFFECTED MASTER CYLINDERS. BOTH NR 2 AND NR 4 BRAKE MASTER CYLINDERS WERE REPLACED. NR 2 CYLINDER P/N V-1000 S/N 3187 TSO - 4382.9, NR 4 CYLINDER P/N VI-15-1000 S/N 13008 TSO- 7753.3. (TC NR 20070727008)