What was found
YELLOW HYD LOW PRESS, FLIGHT DIVERTED. ON WALK AROUND FOUND HYD FLUID LEAKING FROM NR 2 ENG UPPER PYLON. FOUND 2 EA HYD LINES LEAKING INSIDE ACCESS PANEL 425BR. WRAPPED SAFETY WIRE TO SHOW LINES. REMOVED ENG PRECOOLER AND 2EA FIRE X BOTTLES AND CONTINUED REMOVAL OF HYD LINES. LINES REMOVED. NEW LINES NEED TO BE INSTALLED. STARTED INSTALLING HYD LINES. STARTED REINSTALLING NR2 ENG PRECOOLER DUCT AND RETAINER, ONLY 3 SCREWS WOULD ENGAGE THE NUTPLATES IN RETAINER ALL REMAINING SCREWS ARE ONLY SET IN PLACE. REINSTALLED PRECOOLER AND DUCTS AND RETAINERS.