What was found
AIRCRAFT WAS GROUNDED: WHILE TAXING FOR TAKEOFF, PARKING BRAKE WOULD NOT RELEASE. REPLACED PARKING BRAKE SELECTOR VALVE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 32-45-51
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: WHILE TAXING FOR TAKEOFF, PARKING BRAKE WOULD NOT RELEASE. REPLACED PARKING BRAKE SELECTOR VALVE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 32-45-51