As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC QTY DROPPED TO 1QT. JUST BEFORE TAKEOFF AND ISO VALVE CAUTION LIGHT ILLUMINATED. SERVICED NR 1 HYD AND OPERATED NR1 HYD SYS AND FOUND RT INBD SPOILER ACTUATOR LEAKING. R & R RT INBD SPOILER ACTUATOR IAW MM 27-14-05. OPS AND LEAKED CHECKED GOOD.