As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, NR 3 ENGINE START VALVE OPEN LIGHT ILLUMINATED. ENGINE SHUTDOWN CARRIED OUT, EMERGENCY DECLARED IAW CHECKLIST. AIRCRAFT RETURNED TO BASE WITHOUT INCIDENT. NR 3 ENGINE PRESSURE SWITCHREPLACED AND CHECKED SERVICEABLE IAW MM 80-11-11. 3. NO FURTHER INCIDENT DURING SUBSEQUENT FLIGHT.