What was found
(CAN) CAPTAIN REPORTED THAT THE BRAKE PEDALS WERE SPLIT WITH THE RH PEDAL GRABBING AND FELT IT WAS GOING LOWER WHEN PEDAL DEPRESSED. FOLLOWING A CLOSE INSPECTION OF THE BRAKE CONTROL CABLES, THE AME FOUND FRAYING OF THE RH BRAKE CABLE BENEATH THE FLIGHT DECK AT THE FORWARD MOUNTING STRUCTURE ON THE CAPTAIN`S SIDE. (SEE ATTACHED AMM REFERENCE CHAP 32-42-26, FIGURE 201, SHEET 2 OF 4 LOCATION C). THE FRAYING ON THE CABLE WAS AT THE PULLEY (ITEM 72 ON THE SAME SHEET), APPROXIMATELY 4 FEET FROM THE TERMINAL END. NO DAMAGE TO THE PULLEY. RT NORMAL BRAKE CABLE ASSEMBLY REPLACED. OPERATIONAL CHECK OF THE BRAKES COMPLETED AND AIRCRAFT RETURNED TO SERVICE.