Fraport AG has discontinued its complaint hotline. Complaints can now only be submitted online:

The DFS is responsible for air traffic control in Germany. Information about flight routes and altitudes. There is no separate service telephone number. Information about changes to flight procedures is provided on the website under the "Environment" section. Flight paths can also be viewed online.

The "Airport and Region" forum was established by the state government of Hesse. "The forum is intended to facilitate dialogue between the region and the aviation industry." Information on noise reduction measures, a noise impact study commissioned by the state of Hesse, noise monitoring, etc. is available from the Environment and Neighborhood Center (phone 061 07 - 988680).

Robert-Bosch-Str. 28, 63225 Langen, The Federal Supervisory Authority for Air Traffic Control issues flight routes by regulation. 

Information about aircraft noise measurements, flight paths, operating direction, etc.