As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 1817 FLT 11 03 MAY - DURING TAXI HAD LEFT HYD QTY FLUCTUATING. HAD TO RTB TO APPLY MEL. REMOVED PIN AT D2704-B3 RETERMINATED WIRE. RECONNECTED PTU SIGNAL WIRE IN P37 PNL TB274 DIODE R397C PER MEL LT HYD QTY CKS NML. REMOVED MCO AND PLAC.