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

10/02/2025 18:13:03

UK Postcode

TWYFORD-WINCHESTER , HAMPSHIRE , SO21 1QY

Baseline geo-coordinates

51.0194 , -1.31423

Survey type

31 days prior to: 01-Sep-2024 @00:50:57

Assessment band

REGULAR

Assessment actual value

7.49

Assessment description

Will encounter some night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

3,060 / 98.7 / 5.8 ✔

Flights above 26k feet.

1,287 / 41.5 / 2.4 ❌ (755)

Flights between 16k and 26k feet

616 / 19.9 / 1.2 ❌ (350)

Flights between 13k and 15k feet

188 / 6.1 / 0.4 ❌ (179)

Flights between 7k and 12k feet

115 / 3.7 / 0.2 ✔

Flights between 6k and 7k feet

25 / 0.8 / 0.0 ✔

Flights between 5k and 6k feet

25 / 0.8 / 0.0 ✔

Flights between 4k and 5k feet

22 / 0.7 / 0.0 ✔

Flights between 3k and 4k feet

83 / 2.7 / 0.2 ✔

Flights below 3k feet

699 / 22.5 / 1.3 ❌ (584)

4 or more flights per hour

231 / 7.5 ❌ (206)

9 or more flights per hour

11 / 0.4 ✔

Departures between 1.5k and 15k feet

256 / 8.3 / 0.5 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

18 / 0.6

Between 1am and 2am

6 / 0.2

Between 2am and 3am

11 / 0.4

Between 3am and 4am

5 / 0.2

Between 4am and 5am

8 / 0.3

Between 5am and 6am

17 / 0.5

Between 6am and 7am

122 / 3.9

Between 7am and 8am

247 / 8.0

Between 8am and 9pm

2,490 / 80.3 / 5.7

Between 10pm and 11pm

77 / 2.5

Between 11pm and Midnight

32 / 1.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

46 ❌ (30)

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

38 ✔

Minimum avg. distance in miles

0.45

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

46.0 / 17.0 / 2.4 ✔

Flight holding stack identified?

No

Altitude for all flights

19,852 ✔

Altitude of departures between 1.5k and 15k feet

7,103 ❌ (8,466)

Altitude of flights below 20k feet

8,317 ❌ (8,790)

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

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

11.60

Fridays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:6 flight events.

9.00

Fridays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.80

Saturdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.70

Wednesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:5 flight events.

8.60

Fridays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.50

Saturdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.10

Thursdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:4 flight events.

8.00

Thursdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:5 flight events.