With respect to the question of piloting, we have already looked at the issue with a company from the United Kingdom. Of course, there are flight plans at different altitudes. There is a limit of 50 knots for winds on landing, which is very high. The time it takes to get from point A to point B is generally relatively stable and predictable. It's something that can be planned. There are various flight plan options to bypass the winds that would make up for this difference in time.
On May 10th, 2012. See this statement in context.