What was found
DURING TAXI ON TAXIWAY HEADING TO THE ACTIVE RUNWAY, THE FLIGHT CREW NOTED LOW BRAKE PRESSURE AND OPTED TO SHUT DOWN THE AIRCRAFT IN PLACE TO PREVENT LOSS OF CONTROL. BURBANK MAINTENANCE INSPECTED THE BRAKE SYSTEM AND FOUND NO EVIDENCE OF LEAKING FLUID OR OTHER CAUSES OF FAILURE. THE BRAKE SYSTEM WAS BLED AND OPERATIONALLY CHECKED OK BEFORE RETURNING THE AIRCRAFT TO SERVICE. SUSPECT TRAPPED AIR FROM PREVIOUS MAINTENANCE ACTIVITIES SEVERAL DAYS PRIOR.