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Air carrier medium large transport jet blast encounter during takeoff roll on runway 35L at den. Air carrier widebody transport holding on taxiway 90 degrees to takeoff runway.
| Attributes | |
| ACN | 91581 |
| Time | |
| Date | 198807 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : private pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 210 flight time total : 6000 flight time type : 3500 |
| ASRS Report | 91581 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
| Airport | other physical facility |
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.
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.