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

20/01/2022 08:50:26

UK Postcode

LANCING , WEST SUSSEX , BN15 8PQ

Baseline geo-coordinates

50.822 , -0.325675

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

5.33

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

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

827 / 26.7 / 1.6 ✔

Flights above 26k feet.

197 / 6.4 / 0.4 ✔

Flights between 16k and 26k feet

319 / 10.3 / 0.6 ❌ (309)

Flights between 13k and 15k feet

50 / 1.6 / 0.1 ✔

Flights between 7k and 12k feet

191 / 6.2 / 0.4 ✔

Flights between 6k and 7k feet

5 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

1 / 0.0 / 0.0 ✔

Flights between 4k and 5k feet

3 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

3 / 0.1 / 0.0 ✔

Flights below 3k feet

58 / 1.9 / 0.1 ✔

4 or more flights per hour

25 / 0.8 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

44 / 1.4 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

10 / 0.3

1 AM

3 / 0.1

2 AM

3 AM

1 / 0.0

4 AM

2 / 0.1

5 AM

5 / 0.2

6 AM

38 / 1.2

7 AM

56 / 1.8

8 AM to 9 PM

618 / 19.9 / 1.4

10 PM

32 / 1.0

11 PM

27 / 0.9

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

19 ✔

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

28 ✔

Minimum avg. distance in miles

0.47

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

7.0 / 2.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

19,972 ✔

Altitude of departures between 1.5k and 15k feet

9,789 ✔

Altitude of flights below 20k feet

13,127 ✔

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

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

4.67

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

7.00

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

5.00

Thursday @ 19:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

4.50

Wednesday @ 14:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.00

Wednesday @ 13:00 - 2 time(s) in 4 weeks. Approx:4 flight events.