Narrative:

I'm not really sure why this event occurred. There were no thunderstorms advertised on ATIS. We believed the PIREP given by the company pilots who took off 30 seconds before us. We taxied out to runway 17R in VFR conditions with no precipitation or gusty winds advertised in ATIS. Another airplane was just in front of us. After their departure; tower informed us of possible windshear alert +20 KTS. At the same time they gave us position and hold. We then proceeded to stop our taxi and inform them that we were going to wait. The tower suggested that we get a PIREP. The preceding departure reported that they had not encountered any windshear at all. Plus or minus. At this time we decided to continue to position and hold then we were cleared for takeoff. We had a normal takeoff roll with no evidence of any abnormal airspeed or performance changes. At about 400 ft we got a windshear alert (the gear was up but flaps 1 degree was still extended). We performed the windshear escape maneuver by pushing the throttles to the stops and said; 'follow the command bars' which we were already doing. We had about a 30 KT increase in speed from 160-190 KTS then a decreasing speed back to 160 KTS. Then another increase again to about 180 KTS. At this time we were approximately passing through 1000 ft with a vsi pegged; we continued to climb to 3000 ft AGL and determined that we were out of the windshear; we then cleaned up the airplane and continued to climb to our assigned altitude. During the time in which the throttles were pushed to the stops; the left engine red temperature light indicator came on for approximately 5-10 seconds. The red temperature indicator light did not come on initially when I pushed the throttles to the stops but was delayed until sometime in our climb out. We continued to climb to our cruise altitude and monitor engine instruments which showed normal indications. We informed maintenance control of the situation and made a decision to continue to destination.

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Original NASA ASRS Text

Title: B737-300 EXPERIENCES WINDSHEAR ON TKOF FROM DEN.

Narrative: I'M NOT REALLY SURE WHY THIS EVENT OCCURRED. THERE WERE NO TSTMS ADVERTISED ON ATIS. WE BELIEVED THE PIREP GIVEN BY THE COMPANY PLTS WHO TOOK OFF 30 SECONDS BEFORE US. WE TAXIED OUT TO RWY 17R IN VFR CONDITIONS WITH NO PRECIP OR GUSTY WINDS ADVERTISED IN ATIS. ANOTHER AIRPLANE WAS JUST IN FRONT OF US. AFTER THEIR DEP; TWR INFORMED US OF POSSIBLE WINDSHEAR ALERT +20 KTS. AT THE SAME TIME THEY GAVE US POS AND HOLD. WE THEN PROCEEDED TO STOP OUR TAXI AND INFORM THEM THAT WE WERE GOING TO WAIT. THE TWR SUGGESTED THAT WE GET A PIREP. THE PRECEDING DEP RPTED THAT THEY HAD NOT ENCOUNTERED ANY WINDSHEAR AT ALL. PLUS OR MINUS. AT THIS TIME WE DECIDED TO CONTINUE TO POS AND HOLD THEN WE WERE CLRED FOR TKOF. WE HAD A NORMAL TKOF ROLL WITH NO EVIDENCE OF ANY ABNORMAL AIRSPD OR PERFORMANCE CHANGES. AT ABOUT 400 FT WE GOT A WINDSHEAR ALERT (THE GEAR WAS UP BUT FLAPS 1 DEG WAS STILL EXTENDED). WE PERFORMED THE WINDSHEAR ESCAPE MANEUVER BY PUSHING THE THROTTLES TO THE STOPS AND SAID; 'FOLLOW THE COMMAND BARS' WHICH WE WERE ALREADY DOING. WE HAD ABOUT A 30 KT INCREASE IN SPD FROM 160-190 KTS THEN A DECREASING SPD BACK TO 160 KTS. THEN ANOTHER INCREASE AGAIN TO ABOUT 180 KTS. AT THIS TIME WE WERE APPROX PASSING THROUGH 1000 FT WITH A VSI PEGGED; WE CONTINUED TO CLB TO 3000 FT AGL AND DETERMINED THAT WE WERE OUT OF THE WINDSHEAR; WE THEN CLEANED UP THE AIRPLANE AND CONTINUED TO CLB TO OUR ASSIGNED ALT. DURING THE TIME IN WHICH THE THROTTLES WERE PUSHED TO THE STOPS; THE L ENG RED TEMP LIGHT INDICATOR CAME ON FOR APPROX 5-10 SECONDS. THE RED TEMP INDICATOR LIGHT DID NOT COME ON INITIALLY WHEN I PUSHED THE THROTTLES TO THE STOPS BUT WAS DELAYED UNTIL SOMETIME IN OUR CLBOUT. WE CONTINUED TO CLB TO OUR CRUISE ALT AND MONITOR ENG INSTS WHICH SHOWED NORMAL INDICATIONS. WE INFORMED MAINT CTL OF THE SITUATION AND MADE A DECISION TO CONTINUE TO DEST.

Data retrieved from NASA's ASRS site as of January 2009 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.