Is something wrong or am I an word not allowed?

[Rocky 128]

Please have a look at the image below, a screen capture of the A320, and pay attention to the wind speed & direction, and the ground & air speeds.

IMAGE

The wind has been set to be full headwind, coming from 249°, which is exactly my current heading. Consequently I have 27 kts headwind and I would expect to see a difference of approximately 27 between the air speed and the ground speed (note the altitude is quite low, not in the high atmosphere where the air is very thin). Instead of this, the airspeed is 220 kts and the GS is 216, only 4 kts difference.
This is not related to the aircraft, I also noticed this in another one.

Did I miss something or is there something wrong?
Any explanation is greatly welcome.

Eric

[snapshot21 254]

It will follow your True Air Speed (TAS), not your Indicated Air Speed.

[Mike S KPDX 597]

What am I missing...?

you are showing exactly 28 knots of headwind on the aircraft (GS=216, TAS=244)

 

[Bob Scott 7,720]

Where you're making the mistake is assuming that the difference between TAS and IAS is negligible--far from it--in this case it's 24 knots (244 KTAS vs 220 KIAS).  Your groundspeed is your TAS minus the headwind component (244-28) = 216 knots.

[Stearmandriver 2,296]

Yup, look at the TAS and GS shown on your MFD / ND / whatever Airbus calls the map lol. 

[cianpars 1,165]

Apart from deducting headwind speed from IAS, IAS also shows lower than TAS the higher you fly due to the air being thinner.

As a rule of thumb, I add 2% to the IAS for every 1,000 feet increase in altitude.  E.g. IAS of 80 kts at 10,000 feet is circa. 96 kts.

[Manny 1,293]

You are not using live weather.

[Rocky 128]

Thanks for your replies, I understand I am confused between airspeed and TAS. I was comparing the airspeed with the GS to find the wind velocity, but I should compare GS and TAS instead. In that case, the difference is 28 kts, which is exactly the headwind speed.

Thanks for correcting me, I now understand better.