Noise
Noise
In 2007 we focused on:
- Installing a new £1.6m noise and track keeping (NTK) system
- Launching Webtrak - an interactive website which enables users to view aircraft tracks around Gatwick (with a 24 hour delay for security reasons) for a particular time.
- Enabling complaints to be made online. We saw a decrease in the number of callers to the flight evaluation unit (down from 794 to 672), although the number of enquiries went up from 3165 to 5288. The main reasons for complaint included arrivals noise, track-keeping and low flying
- A significant reduction in the number of Chapter 3 high aircraft (now 448 against 4,410 in 2002-03). These are the noisiest aircraft type permitted
- Working with our airline partners to improve aircraft departures track keeping by 0.44% to achieve a level of 98.6% on track
- Working with local environmental health officers to review and analyse data from our mobile noise monitors enabling us to keep track of the noise climate around the airport. This group has also been working together on a plan to make best use of mobile noise monitors in the community
- Consulting and publishing our noise insulation scheme for properties eligible for acoustic insulation assistance, ready to take forward in 2008
- Working with our community and airport stakeholders to improve our ground noise operations analysis and reporting, which has been used to identify areas of focus for the ground noise committee.
Our targets for 2007
| Environment Category | 2007 Target | 2007 Target Performance |
|---|---|---|
| Noise | To improve achievement of CDA (continuous descent approach) across the 24 hour period from 81% in 2006 to 82.5% for 2007 | Some progress |
| We saw a marginal increase in CDA achievement for the ‘day and shoulder’ time period (06.00 to 23.30) during 2007, but the ‘core night’ period (23.30 to 06.00) was slightly lower than 2006. This was largely due to the increase in northern runway operations from runway maintenance works. Overall CDA achievement by arriving flights across the 24 hour period rose by 0.1% but was short of our 82.5% target. | ||
| Environment Category | 2007 Target | 2007 Target Performance |
|---|---|---|
| Noise | Prepare a draft noise action plan for Gatwick and develop a plan for consultation with key stakeholders by 31 December 2007 to enable the action plan to be agreed with key stakeholders by 30 April 2008. | Target achieved |
| We have produced a draft noise action plan for Gatwick and identified the key stakeholders and questions for consultation. However, the deadline for consultation will not be met as BAA is awaiting the delayed publication of Defra guidance on action plan content and consultation. We will be able to consult on our action plan when the Government guidance becomes available later in 2008. | ||
2007 performance data
Callers and complaints
|
| 2005 | 2006 | 2007 |
|---|---|---|---|
| Callers | 898 | 794 | 672 |
| Enquiries | 6189 | 3165 | 5288 |
Night quota
|
| 2005 |
| 2006 |
| 2007 |
|---|---|---|---|---|---|
| Summer | Winter 05-06 | Summer | Winter 06-07 | Summer | |
| Night quota allowance (aircraft movements) | 11200 | 5250 | 11200 | 3250 | 11200 |
|
Quota allowance used: Aircraft movements Percentage
|
10939 97.7% |
3257 62.0% |
10918 97.5% |
2734 84.1% |
10173 90.8% |
| QC Points allowance | 9000 | 6640 | 9000 | 2300 | 6700 |
|
QC point allowance used Points Percentage used
|
8255.5 91.7% |
2677 40.3% |
7749.5 86.1% |
1355.25 58.9% |
5328.5 79.5% |
Population and area within 57dBA LAeq daytime contour
|
| 2004 | 2005 | 2006 |
|---|---|---|---|
| Population | 4500 | 4700 | 4500 |
| Area (km²) | 48.0 | 49.3 | 46.7 |
