What was found
(CAN) FLIGHT CREW REPORTED AIRBRAKE SPOILER CIRCUIT BREAKER WAS FOUND TRIPPED AFTER SHUTDOWN. THE CIRCUIT BREAKER WAS RESET AND DID NOT OPEN AGAIN. DURING MAINTENANCE DAILY INSPECTION, THE CIRCUIT BREAKER WAS AGAIN FOUND TRIPPED. IT WAS RESET AND WITHIN A FEW MOMENTS, OPENED AGAIN. TROUBLESHOOTING OF THE SYS FOUND A HIGH RESISTANCE IN THE RT AIRBRAKE POSITION SWITCH. SWITCH WAS R & R NEW SYSTEM WAS OPERATED AND CHECKED SERVICEABLE IAW AMM CHAPTER 27.