Narrative:

B747-400 (2 pilot cockpit) augmented crew (13 hour flight) of 2 captain and 2 first officer's all on flight deck for takeoff. First officer was making the takeoff. Shortly after liftoff, we heard several loud reports that shook the aircraft. At first, I thought it was a nose tire coming apart -- then #3 engine was observed overtemping. The other captain (in left seat) reduced thrust to idle on #3, bringing temperature back down to normal range -- then advanced it to mid-range. All engine parameters returned to normal and remained that way the rest of flight. Since #3 seemed to be operating normally now, and we were heavy (175000 pounds above maximum landing weight), we agreed to proceed to msp while dumping rather than return to dtw. WX was no factor, good everywhere. We all (crew and company maintenance and dispatch) agreed continuing to nrt was not advisable. Msp had a spare engine and maintenance personnel to inspect the engine and make required repairs. Approximately 150000 pounds of fuel was dumped en route from dtw to msp at FL240 while all 4 engines operated normally. As an extra precaution against another event happening on approach, #3 engine was shut down on descent into msp and emergency equipment was requested to stand by for our landing. No emergency was formally declared. An uneventful landing was made on 3 engines. The engine was subsequently changed (that night) due to temperature limits being exceeded on the dtw takeoff.

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Original NASA ASRS Text

Title: B747-400 HAS ENG OVERTEMP JUST AFTER TKOF FROM DTW WHICH CAUSED HIM TO DUMP FUEL, DIVERT, LAND AT MSP.

Narrative: B747-400 (2 PLT COCKPIT) AUGMENTED CREW (13 HR FLT) OF 2 CAPT AND 2 FO'S ALL ON FLT DECK FOR TKOF. FO WAS MAKING THE TKOF. SHORTLY AFTER LIFTOFF, WE HEARD SEVERAL LOUD RPTS THAT SHOOK THE ACFT. AT FIRST, I THOUGHT IT WAS A NOSE TIRE COMING APART -- THEN #3 ENG WAS OBSERVED OVERTEMPING. THE OTHER CAPT (IN L SEAT) REDUCED THRUST TO IDLE ON #3, BRINGING TEMP BACK DOWN TO NORMAL RANGE -- THEN ADVANCED IT TO MID-RANGE. ALL ENG PARAMETERS RETURNED TO NORMAL AND REMAINED THAT WAY THE REST OF FLT. SINCE #3 SEEMED TO BE OPERATING NORMALLY NOW, AND WE WERE HVY (175000 LBS ABOVE MAX LNDG WT), WE AGREED TO PROCEED TO MSP WHILE DUMPING RATHER THAN RETURN TO DTW. WX WAS NO FACTOR, GOOD EVERYWHERE. WE ALL (CREW AND COMPANY MAINT AND DISPATCH) AGREED CONTINUING TO NRT WAS NOT ADVISABLE. MSP HAD A SPARE ENG AND MAINT PERSONNEL TO INSPECT THE ENG AND MAKE REQUIRED REPAIRS. APPROX 150000 LBS OF FUEL WAS DUMPED ENRTE FROM DTW TO MSP AT FL240 WHILE ALL 4 ENGS OPERATED NORMALLY. AS AN EXTRA PRECAUTION AGAINST ANOTHER EVENT HAPPENING ON APCH, #3 ENG WAS SHUT DOWN ON DSCNT INTO MSP AND EMER EQUIP WAS REQUESTED TO STAND BY FOR OUR LNDG. NO EMER WAS FORMALLY DECLARED. AN UNEVENTFUL LNDG WAS MADE ON 3 ENGS. THE ENG WAS SUBSEQUENTLY CHANGED (THAT NIGHT) DUE TO TEMP LIMITS BEING EXCEEDED ON THE DTW TKOF.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.