Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of 40 decibels i.e. a quiet residential area. If your property is located near to a busy road i.e. 70-75 decibels, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Airborne aircraft noise is typically in the range of 45dB - 65dB for heights below 26,000 feet and for a duration of 30-50 seconds. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

09/06/2024 22:48:29

UK Postcode

MERROW , SURREY , GU4 7EH

Baseline geo-coordinates

51.2526 , -0.529282

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

REGULAR

Assessment actual value

9.51

Assessment description

Will encounter some night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

3,718 / 119.9 / 7.1 ❌ (3,135)

Flights above 26k feet.

681 / 22.0 / 1.3 ❌ (634)

Flights between 16k and 26k feet

230 / 7.4 / 0.4 ✔

Flights between 13k and 15k feet

158 / 5.1 / 0.3 ❌ (135)

Flights between 7k and 12k feet

2,196 / 70.8 / 4.2 ❌ (431)

Flights between 6k and 7k feet

82 / 2.6 / 0.2 ✔

Flights between 5k and 6k feet

36 / 1.2 / 0.1 ✔

Flights between 4k and 5k feet

1 / 0.0 / 0.0 ✔

Flights between 3k and 4k feet

94 / 3.0 / 0.2 ✔

Flights below 3k feet

240 / 7.7 / 0.5 ✔

4 or more flights per hour

417 / 13.5 ❌ (203)

9 or more flights per hour

67 / 2.2 ✔

Departures between 1.5k and 15k feet

510 / 16.5 / 1.0 ❌ (380)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

19 / 0.6

1 AM

4 / 0.1

2 AM

6 / 0.2

3 AM

10 / 0.3

4 AM

8 / 0.3

5 AM

69 / 2.2

6 AM

149 / 4.8

7 AM

212 / 6.8

8 AM to 9 PM

2,986 / 96.3 / 6.9

10 PM

167 / 5.4

11 PM

66 / 2.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

20 ✔

Percentage of overflying occuring Out-Of-Hours and at Weekends

47 ❌ (43)

Minimum avg. distance in miles

0.41

Number of possible disruptions by; day / out-of-hours / hour

90.0 / 43.0 / 4.7 ❌ (72)

Flight holding stack identified?

Yes ❌

Altitude for all flights

14,322 ❌ (16,202)

Altitude of departures between 1.5k and 15k feet

9,499 ✔

Altitude of flights below 20k feet

9,457 ✔

Busiest times of day
(Distruption: 0 - low, 25+ high)

Day of week, time, frequency and number of flight events.

12.50

Thursday @ 17:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

12.10

Saturday @ 11:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.80

Thursday @ 11:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.50

Friday @ 17:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.30

Saturday @ 8:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.90

Friday @ 13:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.60

Friday @ 18:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.10

Thursday @ 14:00 - 4 time(s) in 4 weeks. Approx:7 flight events.