What was found
AFTER PUSH BACK AND NR 1 ENGINE START, BRAKE ACCUMULATOR PRESSURE DROPPED WELL BELOW GREEN BAND. REPLACED THE BRAKE ACCUMULATOR.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER PUSH BACK AND NR 1 ENGINE START, BRAKE ACCUMULATOR PRESSURE DROPPED WELL BELOW GREEN BAND. REPLACED THE BRAKE ACCUMULATOR.