Presumably part of their mandate would be to ensure that nothing undermines the safety of any of the flights in and/or out of that airport. But when you cut back on some service, you essentially would require, by implication, that the carrier, the airline or whoever operates a plane or a helicopter out of a particular airport, would probably have to restructure the flight times at the very least.
On March 3rd, 2009. See this statement in context.