As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED RT ENGINE HYDRAULIC SHUTOFF VALVE WOULD NOT CLOSE FOLLOWING PREFLIGHT CHECKS. FOUND VALVE ASSY STUCK OPEN. REPLACED VALVE ASSY WITH NEW VALVE ASSY, OPERATIONS NORMAL. VALVE ASSY (PN 45AS65014003) HAVE NOTICED THESE VALVE ASSY TENDING TO FAIL WITH SHORT TIE SINCE NEW IN MFG INSTALLATIONS. VALVE ASSY SEEMS FAIRLY RELAIBLE WHEN USED IN OTHER INSTALLATIONS. (K)