INM Link Type 7834

The INM Link software is used to transfer existing data from the Brüel & Kjær Airport Noise Monitoring software to a set of input files that can be used by the INM prediction model for analysis.

Data for the INM prediction model can be created in four different modes in the INM Link software:

• Contour map based on the actual noise: this means that every flight is taken into account as each event is having its own flight track
• High number of mean tracks: in the case of a longer investigation time (weeks, months or years), the amount of input data might be overwhelming for the INM prediction model. In this case a rather high number of "mean" tracks can be used
• Low number of "mean" tracks: to be able to make fast modelling, the number of "mean" tracks has to be reduced to a reasonable number. The difference from Mode 2 is only the number of tracks, and how they are created
• The same as Mode 3, but using the standard instrument departure routes (SIDs)

For Modes 2 and 3 the "mean" tracks are calculated using a number of gates. Each aircraft that passes through a set of specified gates is considered to belong to the associated track.

Required accessories: Brüel & Kjær Flight tracking software Type 7804 and the INM prediction model developed by the FAA, version 6.0.

The INM prediction model developed by the FAA has many analytical uses, such as assessing:

· Changes in noise impact resulting from new or extended runway construction
· New traffic demand and fleet mix
· Revised routings and airspace structures
· Alternative flight profiles
· Modifications to other operational procedures.