Noise pollution

The noise generated from the take-off, landing and flyover of aircraft is one of the more immediate and obvious disturbances related to airports. The noise produced by aircraft concerns a relatively limited number of events over the course of the day and whose maximum sound values are rather high.

Italian airport noise legislation is extensive and complex and involves the handling of the fundamental aspects concerning its measurement, the monitoring systems, the zones around the airport where compliance is necessary, the simulation models, the Airport Commissions, the mitigation actions and numerous other aspects. Each airport open to civil traffic must provide in areas surrounding the airport a continuous monitoring system which records any limit excesses and links this information with the data and the trajectory of flights generating such excess noise.

In addition, an Airport Commission has been set up to carry out the following duties:

  • classification of the airport in relation to noise pollution produced;
  • definition of the anti-noise procedures;
  • definition of the parameters to which noise limits are applied.

 

Noise monitoring at Malpensa and Linate

The SEA Group since 2001 has committed itself to aircraft noise monitoring at the Linate and Malpensa airports and has implemented a recording system comprising 23 fixed stations (17 at Malpensa and 6 at Linate), with five mobile stations, utilised for specific measuring campaigns.

SEA operates in collaboration and under the strict control of ARPA in order to improve the monitoring actions and protect the areas which surround its airports.

ARPA, based on the criteria defined by the Lombardy Region Guidelines, classified 10 of the 17 stations at Malpensa in the “Monitoring” category and 4 of the 6 stations at Milan Linate, defining the remaining as “Environmental”. The noise data recorded by the stations is analysed with the assistance of an IT system; radar traces of individual flights provided by ENAV assist the distinction between aircraft noise emissions and general noise. The information breakdown concerning noise pollution and operations at the Milan airports is presented in a specific section of the SEA website: www.seamilano.eu/it/sostenibilita/sostenibilita-ambientale/rumore.

Milan Linate - Noise monitoring 2012

Milano Linate - Noise monitoring

Note: AEL – Airport Evaluation Level: calculated, in accordance with Ministerial Decree 31/10/1997 – Airport noise measurement methodology, based on the AEL data relating to the three weeks with highest traffic identified in 2012.

Source: SEA

 

Milan Malpensa - Noise monitoring 2012

Milan Malpensa - Noise monitoring 2012

Note: AEL – Airport Evaluation Level: calculated, in accordance with Ministerial Decree 31/10/1997 – Airport noise measurement methodology, based on the AEL data relating to the three weeks with highest traffic identified in 2012.
Source: SEA

The Linate Airport Commission

In May 2009 the Linate Commission outlined a scenario for the rebalancing of the use of take-off routes at the airport in order to reduce the areas and population impacted compared to the situation in 2004, protecting also the most affected parties. The positive result during the experimentation with the new scenario and the improvement actions undertaken thanks to the contribution of SEA resulted in the Linate Airport Commission approving the noise zoning.

The Malpensa Airport Commission

The Malpensa Airport Commission is involved in the rebalancing of traffic, which significantly altered following the de-hubbing of Alitalia.

In September 2010 a scenario was adopted at the airport which allows an equal distribution of take-off traffic on the existing departure routes; significant positive results were also achieved, such as the absolute silence periods at regular intervals in the area, the shortening of a number of take-off routes with the consequent reduction of CO2 emissions and the reduction in the change of use of runways. The new scenario therefore resulted in the improved efficiency of the airports in relation to safety, environment and overall airport efficiency.

In 2011 the Malpensa Airport Commission approved the introduction of “offsetting criteria” to rebalance the misalignment in relation to the percentage usage of runways used for take-off; in addition, the introduction of a new take-off route with the objective to further minimize impacts on the surrounding area is currently under review.

 

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