Night flights
For many years, the problem of night flights has been an issue of severe contention involving political decision-makers and airlines. DFS is not involved in any way with granting authorisations as to if and when night flights may be conducted. Night curfews are imposed by the relevant authority in charge of the airport, for Frankfurt Airport, the Hessian Ministry of Transport (HMWVL).

DFS is in charge of managing air traffic, no matter if flights are conducted during the day or at night.

Noise Impact Reduction and Optimisation System (NIROS)
DFS uses the NIROS planning tool to take noise into due account when planning flight routes. The tool helps to optimise standard instrument departure (SID) routes with respect to their noise impact on the basis of population density. NIROS is a state-of-the-art tool which is used to define  minimum noise routings on the basis of scientific principles and findings. It was originally developed at the Technische Universität Darmstadt, Germany, and is now used and developed further by DFS.

Emergency procedures
In air traffic, a distinction is made between different kinds of emergencies and emergency procedures. According to the Convention on International Civil Aviation, the cockpit crew of an aircraft experiencing an emergency has sole decision-making powers and authority to act. The pilot-in-command is responsible for the safety of the passengers. In the case of an emergency, the relevant air traffic controller will offer all assistance and support required. The pilot-in-command, however, may also make decisions concerning the heading and altitude of the flight. He has to notify the air traffic controller of his decisions and it will then be up to the air traffic controller to avoid any conflicts with other aircraft.