As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING NORMAL ENGINE START AFTER PUSHBACK, NR 1 ENGINE ECAM WARNING INDICATED, LOW OIL PRESSURE. CREW ABORTED ENGINE START. T/S CARRIED OUT, FOUND NR 1 ENGINE OIL PUMP ASSY INPUT SHAFT SHEARED. PUMP WAS REPLACED AND AIRCRAFT WAS RETURNED TO SERVICE. A/C HAD BEEN PARKED FOR APPROX. 36 HOURS. TEMPERATURE AT DEPARTURE WAS 2 DEG C.