As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND DURING WALK AROUND AIR DRIVEN HYDRAULIC PUMP EXPLODED. R&R ADP MODULATING SHUT OFF VLV IAW M/M 29-11-04. R&R ADP HYD P UMP & GEAR BOX ASSY IAW M/M 29-11-03 COULD NOT DO ANY OPS CHECKS PLACED ADP ON MEL SEE LOG PAGE FOR MEL 8658386. VALVE, SHUTOFF, OFF 64-2911-9-0004 0037 ON 64-2911-9-0004 0027.