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

25/04/2024 12:44:48

UK Postcode

WINCHESTER-WEST , HAMPSHIRE , SO22 5FQ

Baseline geo-coordinates

51.076 , -1.34348

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.36

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

1,380 / 44.5 / 2.6 ✔

Flights above 26k feet.

928 / 29.9 / 1.8 ❌ (630)

Flights between 16k and 26k feet

217 / 7.0 / 0.4 ✔

Flights between 13k and 15k feet

15 / 0.5 / 0.0 ✔

Flights between 7k and 12k feet

110 / 3.5 / 0.2 ✔

Flights between 6k and 7k feet

52 / 1.7 / 0.1 ✔

Flights between 5k and 6k feet

31 / 1.0 / 0.1 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

7 / 0.2 / 0.0 ✔

Flights below 3k feet

14 / 0.5 / 0.0 ✔

4 or more flights per hour

10 / 0.3 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

85 / 2.7 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

13 / 0.4

1 AM

3 / 0.1

2 AM

7 / 0.2

3 AM

7 / 0.2

4 AM

13 / 0.4

5 AM

27 / 0.9

6 AM

76 / 2.5

7 AM

75 / 2.4

8 AM to 9 PM

1,099 / 35.5 / 2.5

10 PM

27 / 0.9

11 PM

13 / 0.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

15 ✔

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

44 ❌ (42)

Minimum avg. distance in miles

0.38

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

4.0 / 2.0 / 0.2 ✔

Flight holding stack identified?

No

Altitude for all flights

27,253 ✔

Altitude of departures between 1.5k and 15k feet

8,494 ✔

Altitude of flights below 20k feet

10,923 ✔

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

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

2.75

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

3.83

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

4.50

Wednesday @ 19:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.25

Monday @ 19:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.25

Monday @ 20:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.00

Thursday @ 8:00 - 2 time(s) in 4 weeks. Approx:2 flight events.