What was found
SHORTLY AFTER TAKEOFF, CREW EXPERIENCED, MAIN HYD QTY LO, CAS MSG. DURING APPROACH, AFTER SELECTING FLAPS 8 FOR LANDING, CREW RECEIVED MAIN HYD PRESS CAS. DECLARED EMER & LANDED WITHOUT INCIDENT. CREW HAD BRAKE AUTHORITY DURING LANDING. ON POST FLIGHT CREW FOUND HYD LEAK. LEAKING TROUBLE SHOT TO FLAP PDU. PDU WAS R & R. SATISFACTORY FUNCTIONAL TEST & LEAK CHECK, REF LR40MM 27-50-08, PERFORMED. ALL RII ITEMS COMPLIED WITH.