As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED "PWR BRK LOW PRESS " LIGHT ILLUMINATED AFTER GEAR EXTENSION. CREW PERFORMED CHECKLIST. THE LIGHT REMAINED ILLUMINATED. DECLARED AN EMERGENCY. MADE A NORMAL LANDING, USED EMERGENCY BRAKE SYS. MX FOUND DEFECTIVE 20 AMP CIRCUIT BREAKER FOR THE POWER BRAKE ANTI-SKID MOTOR. CIRCUIT BREAKER WAS REPLACED AND OPS CHECK OF THE SYS WAS PERFORMED SATISFACTORILY. AIRCRAFT RETURNED TO SERVICE.