Narrative:

On takeoff from denver stapleton on runway 35L at rotate point that was abeam of 35R runup area. This rotate point was due to a light takeoff weight for a flight to cos. At rotation an abrupt yaw motion and movement to the left was encountered along with a moderate left roll. The action was ctlable but dramatic. The copilot was on controls. After discussion with crew we all remember an XXX widebody transport on Z-4 facing 35R and believe that this thrust was the cause of our roll and yaw motion. This movement was also observed by myself while jumpseating to my home on an medium large transport some weeks prior but we did not notice if an aircraft was on Z-4 or not. The movement of the aircraft was the same. Recommend that hold takeoff on 35L with heavy aircraft on Z-4 for takeoff on 35R.

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Original NASA ASRS Text

Title: ACR MLG JET BLAST ENCOUNTER DURING TKOF ROLL ON RWY 35L AT DEN. ACR WDB HOLDING ON TXWY 90 DEGREES TO TKOF RWY.

Narrative: ON TKOF FROM DENVER STAPLETON ON RWY 35L AT ROTATE POINT THAT WAS ABEAM OF 35R RUNUP AREA. THIS ROTATE POINT WAS DUE TO A LIGHT TKOF WEIGHT FOR A FLIGHT TO COS. AT ROTATION AN ABRUPT YAW MOTION AND MOVEMENT TO THE LEFT WAS ENCOUNTERED ALONG WITH A MODERATE LEFT ROLL. THE ACTION WAS CTLABLE BUT DRAMATIC. THE COPLT WAS ON CONTROLS. AFTER DISCUSSION WITH CREW WE ALL REMEMBER AN XXX WDB ON Z-4 FACING 35R AND BELIEVE THAT THIS THRUST WAS THE CAUSE OF OUR ROLL AND YAW MOTION. THIS MOVEMENT WAS ALSO OBSERVED BY MYSELF WHILE JUMPSEATING TO MY HOME ON AN MLG SOME WEEKS PRIOR BUT WE DID NOT NOTICE IF AN ACFT WAS ON Z-4 OR NOT. THE MOVEMENT OF THE ACFT WAS THE SAME. RECOMMEND THAT HOLD TKOF ON 35L WITH HEAVY ACFT ON Z-4 FOR TKOF ON 35R.

Data retrieved from NASA's ASRS site as of August 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.