What was found
INSP FOR BRAKE PEDALS LOCKED AND BRAKE DRAG, IT WAS DISCOVERED THAT THE ENTIRE BRAKE SYSTEM, EXCEPT FOR ABOUT A QUARTER OF A PINT, WAS FULL OF WATER WHICH HAD FROZEN THE NIGHT BEFORE WHEN THE TEMPERATURE HAD DROPPED BELOW FREEZING. HEAT WAS APPLIED TO THE ACCESSIBLE AREAS OF BRAKE LINES AND THE RESERVOIR TO THAW THEM. THE SYSTEM WAS THEN FLUSHED OUT AND SERVICED WITH THE CORRECT FLUID AND CHECKED FOR LEAKS. ALL TOGETHER ABOUT A QUART OF WATER WAS DRAINED FROM THE SYSTEM.