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

03/09/2023 18:24:02

UK Postcode

WINCHESTER-WEST , HAMPSHIRE , SO22 5FQ

Baseline geo-coordinates

51.076 , -1.34348

Survey type

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

Assessment band

MINIMAL

Assessment actual value

3.42

Assessment description

Sound equates to a quiet country lane i.e. irregular and low volume traffic. However, occasionally some of the flights could be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 0.0 --> Upper: 4.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,727 / 55.7 / 3.3 ✔

Flights above 26k feet.

1,253 / 40.4 / 2.4 ❌ (630)

Flights between 16k and 26k feet

239 / 7.7 / 0.5 ✔

Flights between 13k and 15k feet

35 / 1.1 / 0.1 ✔

Flights between 7k and 12k feet

104 / 3.4 / 0.2 ✔

Flights between 6k and 7k feet

38 / 1.2 / 0.1 ✔

Flights between 5k and 6k feet

31 / 1.0 / 0.1 ✔

Flights between 4k and 5k feet

8 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

8 / 0.3 / 0.0 ✔

Flights below 3k feet

11 / 0.4 / 0.0 ✔

4 or more flights per hour

5 / 0.2 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

74 / 2.4 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

14 / 0.5

1 AM

6 / 0.2

2 AM

8 / 0.3

3 AM

4 / 0.1

4 AM

9 / 0.3

5 AM

28 / 0.9

6 AM

91 / 2.9

7 AM

112 / 3.6

8 AM to 9 PM

1,372 / 44.3 / 3.2

10 PM

27 / 0.9

11 PM

36 / 1.2

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

39 ✔

Minimum avg. distance in miles

0.33

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

5.0 / 2.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

29,098 ✔

Altitude of departures between 1.5k and 15k feet

8,536 ✔

Altitude of flights below 20k feet

11,900 ✔

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

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

4.00

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

3.17

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

2.83

Tuesday @ 9:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

4.25

Monday @ 18:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.00

Thursday @ 10:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.25

Monday @ 8:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.00

Sunday @ 10:00 - 2 time(s) in 4 weeks. Approx:3 flight events.