An air carrier flight beginning their takeoff roll on runway 22L at ord momentarily lost directional...

Attributes
ACN	871175
Time
Date	201001
Local Time Of Day	1801-2400
Place
Locale Reference	ORD.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Flight Phase	Takeoff
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control

Narrative:

We were cleared for takeoff on ord runway 22L. As I taxied from the holding area into position on runway 22L I looked over and saw a 777 jumbo jet simultaneously taxi into position on runway 28. The winds were from our right; 260 at 18 gusting to 27. I turned the aircraft over to the first officer and as he was bringing the power up from idle the aircraft began sliding to the left and weathervaning to the right; due to the huge gust of wind coming from our right. I recognized this as coming from the 777 and came onto the controls to steer us a very short distance out of the jet blast and back to the runway 22L centerline; using the tiller wheel. After checking that all was normal; we proceeded with the takeoff. The rest of the flight to our destination was uneventful. Runway 22L is a wonderful and useful runway; but it is important to acknowledge its hazards. If we had been fully powered up and moving forward on the less-than-dry runway when this occurred; the outcome could easily have been seriously different.

Original NASA ASRS Text

Title: An Air Carrier flight beginning their takeoff roll on Runway 22L at ORD momentarily lost directional control when they encountered the jet blast of a B777 spooling up for takeoff on Runway 28.

Narrative: We were cleared for takeoff on ORD Runway 22L. As I taxied from the holding area into position on Runway 22L I looked over and saw a 777 Jumbo Jet simultaneously taxi into position on Runway 28. The winds were from our right; 260 at 18 gusting to 27. I turned the aircraft over to the First Officer and as he was bringing the power up from idle the aircraft began sliding to the left and weathervaning to the right; due to the huge gust of wind coming from our right. I recognized this as coming from the 777 and came onto the controls to steer us a very short distance out of the jet blast and back to the Runway 22L centerline; using the tiller wheel. After checking that all was normal; we proceeded with the takeoff. The rest of the flight to our destination was uneventful. Runway 22L is a wonderful and useful runway; but it is important to acknowledge its hazards. If we had been fully powered up and moving forward on the less-than-dry runway when this occurred; the outcome could easily have been seriously different.

Data retrieved from NASA's ASRS site as of April 2012 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.

An air carrier flight beginning their takeoff roll on runway 22L at ord momentarily lost directional control when they encountered the jet blast of a B777 spooling up for takeoff on runway 28.