As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT, CREW OBSERVED POWER BRAKE-ANTI-SKID WARNING ANNUNCIATION CREW UTILZED PNUEMATIC EMERGENCY BRAKES TO STOP. ACFT TOWED TO LOCAL FBO FOR INSPECTION/REPAIRS. ACFT PERSONNEL TRAVELED TO LOCATION AND TROUBLESHOT TO DEFECTION BRAKE POWERPACK ASSY. POWERPACK ASSY REPLACED, BRAKES BLED SYS OPS AND LEAK CHECKED SATISFACTORY AND ACFT RETURNED TO SERVICE.