Assessment ScoreCard – 31 Day

Summary Overview

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

10/02/2021 11:56:59

Location

ESHER , SURREY , KT10 9PG

Baseline geo-coordinates

51.3722 , -0.357635

Survey type

31 Day. Based on the 31 days prior to the survey date shown above.

Assessment band

OCCASIONAL

Assessment actual value

5.64

Assessment description

Sound equates to a "C" road or an active country lane i.e. irregular traffic volumes. Location is on a flight route as opposed to a flight corridor. Some of the flights will be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 4.0 --> Upper: 7.0

Flight holding stack identified?

No

Count of Flights & Height Band

Assessment Period / Daily Avg. / Hourly Avg.

Count of ALL flights

647 / 20.9 / 1.2 ✔

Flights above 26k feet.

137 / 4.4 / 0.3 ✔

Flights between 16k and 26k feet

24 / 0.8 / 0.0 ✔

Flights between 13k and 15k feet

12 / 0.4 / 0.0 ✔

Flights between 7k and 12k feet

208 / 6.7 / 0.4 ❌ (130)

Flights between 6k and 7k feet

93 / 3.0 / 0.2 ❌ (50)

Flights between 5k and 6k feet

108 / 3.5 / 0.2 ❌ (71)

Flights between 4k and 5k feet

57 / 1.8 / 0.1 ✔

Flights between 3k and 4k feet

6 / 0.2 / 0.0 ✔

Flights below 3k feet

2 / 0.1 / 0.0 ✔

4 or more flights per hour

23 / 0.7 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

395 / 12.7 / 0.7 ❌ (151)

Count of Flights by Hour Band

Assessment Period / Day / Hourly Average

0 AM

6 / 0.2

1 AM

2 / 0.1

2 AM

3 / 0.1

3 AM

6 / 0.2

4 AM

4 / 0.1

5 AM

19 / 0.6

6 AM

18 / 0.6

7 AM

20 / 0.6

8 AM to 9 PM

523 / 16.9 / 1.2

10 PM

27 / 0.9

11 PM

11 / 0.4

Averages over assessment period

Time in seconds an aircraft existed in the Airspace Bubble

17 ✔

Altitude for all flights

13,706 ❌ (16,114)

Altitude of departures between 1.5k and 15k feet

6,726 ❌ (7,570)

Altitude of flights below 20k feet

7,307 ❌ (7,316)

Number of disruptions per day

9.0 ✔

Percentage of Pass-bys that occur Out-Of-Hours and at Weekends

51 ❌ (43)

Minimum distance from base in miles

0.70

Scale of regular disruption
(0 - low, 25+ high)

Period and Frequency

4.75

Sunday @ 13:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.67

Thursday @ 14:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

7.33

Sunday @ 10:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

5.33

Sunday @ 14:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

5.17

Thursday @ 11:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.83

Saturday @ 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.50

Sunday @ 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.67

Saturday @ 9:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

7.50

Friday @ 14:00 - 2 time(s) in 4 weeks. Approx:5 flight events.