As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LANDING, PILOT REPORTED BRAKING ACTION WAS NORMAL. UPON SECOND APPLICATION OF BRAKES TO ENTER A TAXIWAY, LOST ALL BRAKING ACTION. ACFT WAS STOPPED WITHOUT INCIDENT, USING EMERGENCY PNUEMATIC SYS. MX BLED BRAKES AND TROUBLESHOT SYS TO A LOOSE FITTING DRIVE CLIP IN RT HUBCAP. CLIP WAS ADJUSTED AND OPS TEST WAS STATISFACTORY. ACFT TAXI TEST WAS SATISFACTORY.