What was found
BROKEN PARKING BRAKE SPRING. AFTER PERFORMING ENGINE RUN UP, LEFT BRAKE STUCK DUE TO A BROKEN PARKING BRAKE SPRING THAT RETAINS PLATE LOCK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BROKEN PARKING BRAKE SPRING. AFTER PERFORMING ENGINE RUN UP, LEFT BRAKE STUCK DUE TO A BROKEN PARKING BRAKE SPRING THAT RETAINS PLATE LOCK.