Narrative:

After landing ord, captain was called by maintenance control and told that both engines had exceeded egt limits for the engines. #1 engine was at 953 degrees C for 10 seconds and #2 engine was at 963 degrees C for 16 seconds. On takeoff, the autothrottle was on and we did a maximum performance takeoff for performance limit. Maintenance control said OAT (outside air temperature) 81 degrees F and I think it was around 21-22 degrees C. After pushing toga button, the autothrottle overshot N1% by 2% before catching itself and setting the correct N1%. Takeoff was normal and after the V1, vr, V2 callouts, I was looking outside for traffic as we were given a 280 degree heading, and did not see the red lights associated with the overheat. The overheat must have happened between liftoff and reduction of climb power at 800 ft AGL, and came back within limits after power reduction. Maintenance controller said these engines were original engines with 28000 hours. Supplemental information from acn 582945: maintenance controller said engines were the original engines on this aircraft and had more than 28000 hours. He also said that they would need to be changed. I am sure that the engines did not exceed 930 degrees until after airborne, then came back within limits after climb power was selected. I feel these engines were worn out and the right combination of high altitude and high temperature at maximum power caused this exceedance.

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Original NASA ASRS Text

Title: B737-500 ACFT EXCEEDS THE EGT PARAMETERS FOR TKOF CONSIDERATIONS AT SLC, UT.

Narrative: AFTER LNDG ORD, CAPT WAS CALLED BY MAINT CTL AND TOLD THAT BOTH ENGS HAD EXCEEDED EGT LIMITS FOR THE ENGS. #1 ENG WAS AT 953 DEGS C FOR 10 SECONDS AND #2 ENG WAS AT 963 DEGS C FOR 16 SECONDS. ON TKOF, THE AUTOTHROTTLE WAS ON AND WE DID A MAX PERFORMANCE TKOF FOR PERFORMANCE LIMIT. MAINT CTL SAID OAT (OUTSIDE AIR TEMP) 81 DEGS F AND I THINK IT WAS AROUND 21-22 DEGS C. AFTER PUSHING TOGA BUTTON, THE AUTOTHROTTLE OVERSHOT N1% BY 2% BEFORE CATCHING ITSELF AND SETTING THE CORRECT N1%. TKOF WAS NORMAL AND AFTER THE V1, VR, V2 CALLOUTS, I WAS LOOKING OUTSIDE FOR TFC AS WE WERE GIVEN A 280 DEG HDG, AND DID NOT SEE THE RED LIGHTS ASSOCIATED WITH THE OVERHEAT. THE OVERHEAT MUST HAVE HAPPENED BTWN LIFTOFF AND REDUCTION OF CLB PWR AT 800 FT AGL, AND CAME BACK WITHIN LIMITS AFTER PWR REDUCTION. MAINT CTLR SAID THESE ENGS WERE ORIGINAL ENGS WITH 28000 HRS. SUPPLEMENTAL INFO FROM ACN 582945: MAINT CTLR SAID ENGS WERE THE ORIGINAL ENGS ON THIS ACFT AND HAD MORE THAN 28000 HRS. HE ALSO SAID THAT THEY WOULD NEED TO BE CHANGED. I AM SURE THAT THE ENGS DID NOT EXCEED 930 DEGS UNTIL AFTER AIRBORNE, THEN CAME BACK WITHIN LIMITS AFTER CLB PWR WAS SELECTED. I FEEL THESE ENGS WERE WORN OUT AND THE RIGHT COMBINATION OF HIGH ALT AND HIGH TEMP AT MAX PWR CAUSED THIS EXCEEDANCE.

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.