B737-800 flight crew reported rejecting the takeoff at 140 knots after experiencing a sudden uncomma...

Attributes
ACN	1451124
Time
Date	201705
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Ground Event / Encounter Other / Unknown

Narrative:

Weight approximately 141.0; flap 1; 22K max [thrust set] (adjusted to max due to gusty winds and landing aircraft reporting a 20 knot gain at 300 feet).during [takeoff] roll the aircraft experienced a sudden; significant and uncommanded yaw to the right. Initiated reject procedure at approximately 140 knots. Asked for fire and rescue to look over the aircraft. They noticed nothing unusual; brakes were not overheating; taxied to the gate.

Original NASA ASRS Text

Title: B737-800 flight crew reported rejecting the takeoff at 140 knots after experiencing a sudden uncommanded yaw.

Narrative: Weight approximately 141.0; Flap 1; 22K Max [thrust set] (adjusted to max due to gusty winds and landing aircraft reporting a 20 knot gain at 300 feet).During [takeoff] roll the aircraft experienced a sudden; significant and uncommanded yaw to the right. Initiated reject procedure at approximately 140 knots. Asked for Fire and Rescue to look over the aircraft. They noticed nothing unusual; brakes were not overheating; taxied to the gate.

Data retrieved from NASA's ASRS site 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.