As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOTS REPORTED HYD 1 LO PRESS CAUTION MESSAGE ON IN FLIGHT. PRESSURE AND QUANTITY AT ZERO. EXECUTED APPROPRIATE CHECK LISTS. ENGINE DRIVEN PUMP RAN DRY FOR 37 MINS. REMOVED AND REPLACED NR 1 EDP IAW 29-13-00 DUE TO BEING RAN DRY. REMOVED AND REPLACED NR 1 SYSTEM RETURN LINE DUE TO PIN HOLE FOUND.