As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LANDED BACK IN TOLEDO AFTER TAKEOFF DUE TO TRANSFER LIGHT CAME ON AT 22,000 FEET. LIGHT CAME ON AT ALTITUDE, STAYED ON UNTIL DESCENDED TO 3,000 FEET. TIGHTENED NR 1 HYDRAULIC RESERVOIR CAP AND G/R THE AIRCRAFT. OPS CHECKED GOOD. SERVICED HYDRAULIC RESERVOIR. OPS CHECK GOOD ON GROUND RUN. (X)