No. The proficiency of pilots is done in two ways. One of them is what we call the alternative, which is using the simulators, etc., and then the other one is in the planes. However we train our pilots, they still need to fly in an airplane every.... I don't know the interval, but a certain time. Just using a simulator won't be enough for them to keep their certification.
On December 7th, 2011. See this statement in context.