As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, ENG NR 1 START VALVE OPEN LIGHT ILLUMINATED. REMOVED PNEUM SUPPLY FROM NR 1 MANIFOLD AND RETURNED TO OAK. ENGINE OPERATION APPEARED NORMAL. DUMPED FUEL TO LANDING WEIGHT OF 375.000 PRIOR TO LANDING. START VALVE LIGHT WENT OUT AFTER 3 TO 5 MINUTES. REMOVED AND REPLACED NR 1 ENG START VALVE IAW M/M 80-11-03. ALL IND NORMAL COWLS CLOSED AND LOCKED.