As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 RUDDER HYDRAULIC CAUTION LIGHT ILLUMINATED AFTER TAKEOFF. RETURNED TO FIELD. LANDED UNEVENTFUL. R & R NR 1 RUDDER SHUTOFF VALVE AS A PRECAUTION. INSTALLED IAW AMM TASK 27-21-28-400-801. REMOVED IAW AMM 27-21-28-000-801. PERFORMED OPS TEST IAW TASK 27-21-28-710-801. OPS TEST GOOD. RETURNED TO SERVICE.