What was found
AT CRUISE, ALT NR 3 START VALVE OPEN LIGHT CAME ON INTERMITTENTLY THEN CAME ON SOLID PERFORMED ABNORMAL PROCEDURE SHUT ENGINE DOWN. DEFERRED PER MEL 80-1-1 CAT C DMI 27002 JR ITEMS TRANS TO DMI LOG AT THIS LOCATION SAT PLACARD INSTALLED. REFER TO DMI NR 27002 NR 3 START VALVE LIGHT CAME ON IN FLT. REMOVED AND REPLACED NR 3 END START VALVE AND START VALVE LT PRESS SWITCH (PN 1G386) PER B727 MM CH 80-11-11. OPS AND LEAK CHECK GOOD. T HIS CLEARS DMI NR 27002, PLACARDS REMOVED.