As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES REQUIRE EXCESSIVE PEDAL THROW TO BE EFFECTIVE, ESPECIALLY FROM RIGHT SEAT POSITION. TROUBLESHOT TO LEAKING BRAKE MASTER CYLINDERS. REPLACED ALL FOUR MASTER CYLINDERS IAW CESSNA 560 M/M 32-42-01. BLED BRAKES, LEAK AND OPERATIONAL CHECKS GOOD.