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

24/10/2024 12:15:10

UK Postcode

WINCHESTER-SOUTH-ST-CROSS , HAMPSHIRE , SO23 9RJ

Baseline geo-coordinates

51.0471 , -1.32417

Survey type

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

Assessment band

INTERMITTENT

Assessment actual value

5.98

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,586 / 83.4 / 4.9 ✔

Flights above 26k feet.

1,341 / 43.3 / 2.5 ❌ (720)

Flights between 16k and 26k feet

444 / 14.3 / 0.8 ❌ (324)

Flights between 13k and 15k feet

107 / 3.5 / 0.2 ✔

Flights between 7k and 12k feet

113 / 3.6 / 0.2 ✔

Flights between 6k and 7k feet

13 / 0.4 / 0.0 ✔

Flights between 5k and 6k feet

24 / 0.8 / 0.0 ✔

Flights between 4k and 5k feet

94 / 3.0 / 0.2 ✔

Flights between 3k and 4k feet

99 / 3.2 / 0.2 ✔

Flights below 3k feet

351 / 11.3 / 0.7 ✔

4 or more flights per hour

122 / 3.9 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

117 / 3.8 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

24 / 0.8

1 AM

7 / 0.2

2 AM

5 / 0.2

3 AM

5 / 0.2

4 AM

3 / 0.1

5 AM

18 / 0.6

6 AM

106 / 3.4

7 AM

197 / 6.4

8 AM to 9 PM

2,062 / 66.5 / 4.8

10 PM

76 / 2.5

11 PM

42 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

41 ✔

Minimum avg. distance in miles

0.55

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

28.0 / 11.0 / 1.5 ✔

Flight holding stack identified?

No

Altitude for all flights

22,661 ✔

Altitude of departures between 1.5k and 15k feet

8,029 ✔

Altitude of flights below 20k feet

8,624 ✔

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

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

8.40

Monday @ 8:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.60

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

6.80

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

6.00

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

5.90

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

5.50

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

8.88

Wednesday @ 8:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.50

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:5 flight events.