FLC OF AN SMT METRO II ACFT OPERATED THE ACFT AFTER 1 ENG WAS 'OVERTEMPED' DURING STARTING WITHOUT A 'HOT SECTION;' INSPECTION; OR EVEN A WRITE-UP.

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AFTER DROPPING OFF OUR PAX AT EUG; WE WENT OUT TO START THE ACFT TO DEAD HEAD HOME. THE FBO'S GPU WAS INOP SO WE ATTEMPTED A BATTERY START. AS SOON AS THE CAPT PUSHED THE START BUTTON; ALL OF THE LIGHTS GOT REAL DIM; THE TEMP CAME UP TO ABOUT 550 DEGS C AND STAYED THERE A COUPLE OF SECONDS. THEN; WITHOUT WARNING; THE TEMP SHOT UP TO 800- 900 DEGS C. THE RED LINE ON START IS 770 DEGS. THE CAPT DID NOT NOTICE IT RIGHT AWAY. I THEN POINTED IT OUT AND SHE SHUT DOWN THE ENG. WE THEN TRIED THE L ENG WITH A SMALL BATTERY CART AND IT STARTED. THE CAPT SAID THAT SHE WOULD LET MAINT KNOW WHEN WE GOT BACK TO OUR BASE AND THE FLT WAS UNEVENTFUL. I DID NOT THINK ANYMORE OF THIS UNTIL FEB/XX/95 WHEN IT HAPPENED AGAIN. WE WERE IN A HURRY AND OUR ONLY GPU WAS IN USE; SO WE TRIED A BATTERY START WITH THE SAME ACFT. AGAIN THE TEMP SHOT UP TO 800-900 DEGS C. THIS TIME WE WROTE IT UP AFTER WE WENT FLYING. LATER THE NEXT DAY; THE CHIEF PLT CALLED ME INTO HIS OFFICE. HE ASKED IF I KNEW THAT IF AN ENG IS OVERTEMPED DURING THE START THAT YOU CANNOT FLY IT AND THE ENG NEEDS A HOT INSPECTION. I SAID 'NO.' HE TOLD ME THAT THE CAPT WAS COMING IN TO CHANGE THE WRITE UP AND I TOLD HIM THAT I REALLY WAS NOT SURE EXACTLY WHAT TEMP THE ENG WENT UP TO DURING THE START; WHICH IS TRUE. THE MATTER WAS DROPPED. THE ACFT MANUAL THAT I HAVE IS SMALL AND HAS NO INFO ON WHAT TO DO IF AN ENG IS OVERTEMPED. MAINT NEVER DID AN INSPECTION OF THAT ENG.