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

20/03/2024 18:50:34

UK Postcode

LYNDHURST , HAMPSHIRE , SO43 7DT

Baseline geo-coordinates

50.8756 , -1.58645

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.39

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

704 / 22.7 / 1.3 ✔

Flights above 26k feet.

285 / 9.2 / 0.5 ✔

Flights between 16k and 26k feet

224 / 7.2 / 0.4 ✔

Flights between 13k and 15k feet

17 / 0.5 / 0.0 ✔

Flights between 7k and 12k feet

46 / 1.5 / 0.1 ✔

Flights between 6k and 7k feet

4 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

7 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

10 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

9 / 0.3 / 0.0 ✔

Flights below 3k feet

102 / 3.3 / 0.2 ✔

4 or more flights per hour

11 / 0.4 ✔

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

1 AM

1 / 0.0

2 AM

4 / 0.1

3 AM

3 / 0.1

4 AM

2 / 0.1

5 AM

4 / 0.1

6 AM

36 / 1.2

7 AM

67 / 2.2

8 AM to 9 PM

567 / 18.3 / 1.3

10 PM

6 / 0.2

11 PM

1 / 0.0

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

20 ✔

Minimum avg. distance in miles

0.45

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

4.0 / 1.0 / 0.2 ✔

Flight holding stack identified?

No

Altitude for all flights

21,788 ✔

Altitude of departures between 1.5k and 15k feet

10,260 ✔

Altitude of flights below 20k feet

8,769 ✔

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

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

6.33

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

5.00

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

2.75

Monday @ 12:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

2.50

Monday @ 11:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

8.00

Thursday @ 9:00 - 1 time(s) in 4 weeks. Approx:4 flight events.

6.00

Tuesday @ 16:00 - 1 time(s) in 4 weeks. Approx:3 flight events.