B737-800 MONITOR RADAR DISPLAY happened twice on same situation.
I really do not understand why MONITOR RADAR DISPLAY warming happened twice on same situation. Hope some friends can help me.
The first time ,at about 9 am, August ,2013.The weather is very nice and sunny,CAVOK,wind calm.After take-off,at about 400AGL,the MONITOR RADAR DISPLAY warming came out.CAP and I ,as FO,both surprised.Two weather reader automatically turned on,windshear symbol showed on ND.Everything else is normal.
The second time,at 9 pm ,04/02,2014.Everthing is just like the first time,but the altitude is 1000AGL.
The two warmings happened on same aircraft,same airport ,same runway,same good weather.
I am not sure what is going on .Hope somebody can help me.Thanks a lot!