As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE FROM JAX TO LGA RECEIVED HYD SYS NR 1 LOW PRESS CAUTION MSG. FOLLOWED QRH, HYD QTY SHOWED, PRESS DROPPED TO 0 PSI. ACFT DIVERTED TO RIC AND LANDED SAFELY. FOUND LT ENG EDP SUPPLY LINE CHAFED. REPAIRED EDP SUPPLY LINE IAW CRJ AMM TASK 20-22-00-910-802. (S)