What was found
ON TAXI OUT FROM RAMP THE CAPTAINS BRAKES (RIGHT BRAKE PEDAL) FELT 'MUSHY' AND DIFFERENT COMPARED TO CAPTIANS LEFT BRAKE PEDAL. THE F.O'S BRAKES AND STEERING FRLT OK. THE RIGHT BRAKES PEDAL CAPTAINS WHEN PRESSED ALMOST DOWN TO THE FLOOR. VERIFIED DISCREPANCY UPON ARRIVAL, PILOTS RH PEDAL WITH BRAKES APPLIED PEDAL BOTTOMS OUT. PERFORMED RH BRAKE BLEEDING PROCEDURE, NO VISABLE AIR BLED FROM BRAKES. PERFORMED SEVERAL OPERATIONAL CHECKS OF THE PILOTS BRAKE PEDALS AND BOTH BRAKES HOLD PRESSURE. ALL WORK PERFORMED IN REFERENCE WITH CESSNA MODEL 560XL AMM 32-42-00.