<< >> NASA ASRS Report 1722582, January 2020

Dispatcher reported that random windshear alerts occur at ric airport when no significant weather exists.

Attributes
ACN	1722582
Time
Date	202001
Local Time Of Day	0001-0600
Place
Locale Reference	RIC.Airport
State Reference	VA
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	ATC Issue All Types

Narrative:

Aircraft X experienced two low speed rejected takeoffs due to predictive windshear alerts. Ric ATC (air traffic control) reported that they regularly experience false windshear alerts during winter months at sunrise. Additionally; another air carrier flight experiences the same phenomenon right before aircraft X took the runway for their first scheduled takeoff. After deferring the predictive windshear detection and avoidance system; aircraft X successfully departed. This faulty windshear phenomenon occurred the previous day as well causing one flight to reject takeoff three separate times.recommend publishing additional airport information about the faulty windshear detection for the aircrew so the safest decisions can be made while reducing lengthy delays.

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Original NASA ASRS Text

Title: Dispatcher reported that random windshear alerts occur at RIC airport when no significant weather exists.

Narrative: Aircraft X experienced two low speed rejected takeoffs due to predictive windshear alerts. RIC ATC (Air Traffic Control) reported that they regularly experience false windshear alerts during winter months at sunrise. Additionally; another air carrier flight experiences the same phenomenon right before Aircraft X took the runway for their first scheduled takeoff. After deferring the Predictive Windshear Detection and Avoidance System; Aircraft X successfully departed. This faulty windshear phenomenon occurred the previous day as well causing one flight to reject takeoff three separate times.Recommend publishing additional airport information about the faulty windshear detection for the aircrew so the safest decisions can be made while reducing lengthy delays.

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.