As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER PUSHBACK AND START, FLAP 2 SELECTED AND HYDRAULIC SYSTEM A LOW PRESSURE ILLUMINATED AND HYD QTY GUAGE DECREASED TO ZERO. MAINTENANCE FOUND THE A SYSTEM AILERON POWER CONTROL UNIT (PCU) FILTER BOWL HAD FRACTURED RESULTING IN LOSS OF HYD PRESS/FLUID. FURTHER INFO INCLUDING THE UNIT PART NUMBER AND S/N WILL FOLLOW AFTER SHOP REPORT IS RECEIVED.