Air traffic noise is the greatest environmental concern of Genève Aéroport. For three decades, Genève Aéroport has measured, monitored and taken action to counteract noise levels.

Since the early 70s, Genève Aéroport has operated a network of noise-measuring stations. The automatic noise measuring and identification system (MIABA) was modernised in 2003. It consists of 15 measuring stations linked to information systems operating 24 hours a day. MIABA is connected to the skyguide (in charge of air traffic control) multiradar system  facilitating accurate and continuous correlations between noise and aircraft.

MIABA enables Genève Aéroport to monitor noise levels and develop preventive measures. If need be, flight procedure-deviation parameters are given. Local residents and other interested parties are kept informed.

MIABA measurements confirm a downward trend in noise levels despite the general increase in air traffic activity. This trend is due to the increased use of newer aircraft flying to and from Geneva, to a range of operating restrictions which prohibits access to the noisiest aircraft and to the implementation of a noise prevention program.

Actions to counteract noise disturbance are based on active and passive measures as well as one-off actions.

Active measures are taken to reduce noise at source:

• Aircraft certification
• Financial incentive for airlines.

Passive measures supplement active measures by reducing the effects of noise produced by air traffic and airport activities. These measures are taken according to air traffic flows:

• Reduced-noise procedures
• Night-time flight restrictions
• Limiting noise from airport activities
• Residential soundproofing.