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

25/01/2022 13:18:12

UK Postcode

WINCHESTER-EAST , HAMPSHIRE , SO23 0JP

Baseline geo-coordinates

51.061 , -1.29789

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.61

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

860 / 27.7 / 1.6 ✔

Flights above 26k feet.

352 / 11.4 / 0.7 ✔

Flights between 16k and 26k feet

177 / 5.7 / 0.3 ❌ (175)

Flights between 13k and 15k feet

96 / 3.1 / 0.2 ❌ (80)

Flights between 7k and 12k feet

52 / 1.7 / 0.1 ✔

Flights between 6k and 7k feet

9 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

8 / 0.3 / 0.0 ✔

Flights between 4k and 5k feet

7 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

29 / 0.9 / 0.1 ✔

Flights below 3k feet

130 / 4.2 / 0.2 ✔

4 or more flights per hour

20 / 0.6 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

65 / 2.1 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

1 / 0.0

2 AM

3 / 0.1

3 AM

3 / 0.1

4 AM

5 / 0.2

5 AM

7 / 0.2

6 AM

22 / 0.7

7 AM

62 / 2.0

8 AM to 9 PM

730 / 23.5 / 1.7

10 PM

12 / 0.4

11 PM

6 / 0.2

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

21 ✔

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

30 ✔

Minimum avg. distance in miles

0.32

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

8.0 / 2.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

20,671 ✔

Altitude of departures between 1.5k and 15k feet

12,663 ✔

Altitude of flights below 20k feet

10,275 ✔

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

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

4.63

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

4.50

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

3.25

Thursday @ 16:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

4.67

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

4.33

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

3.83

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

2.83

Monday @ 11:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

7.00

Wednesday @ 11:00 - 2 time(s) in 4 weeks. Approx:5 flight events.