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

24/03/2025 13:59:29

UK Postcode

LYMINGTON-TOWN-SPRING24 , HAMPSHIRE , SO41 3NP

Baseline geo-coordinates

50.7552 , -1.54548

Survey type

31 days prior to: 01-May-2024 @22:36:19

Assessment band

INTERMITTENT

Assessment actual value

4.91

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

2,545 / 82.1 / 4.8 ✔

Flights above 26k feet.

1,296 / 41.8 / 2.5 ❌ (755)

Flights between 16k and 26k feet

1,042 / 33.6 / 2.0 ❌ (350)

Flights between 13k and 15k feet

30 / 1.0 / 0.1 ✔

Flights between 7k and 12k feet

19 / 0.6 / 0.0 ✔

Flights between 6k and 7k feet

7 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

10 / 0.3 / 0.0 ✔

Flights between 4k and 5k feet

49 / 1.6 / 0.1 ✔

Flights between 3k and 4k feet

52 / 1.7 / 0.1 ✔

Flights below 3k feet

40 / 1.3 / 0.1 ✔

4 or more flights per hour

90 / 2.9 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

14 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

4 / 0.1

Between 1am and 2am

2 / 0.1

Between 2am and 3am

1 / 0.0

Between 3am and 4am

4 / 0.1

Between 4am and 5am

9 / 0.3

Between 5am and 6am

41 / 1.3

Between 6am and 7am

170 / 5.5

Between 7am and 8am

220 / 7.1

Between 8am and 9pm

2,017 / 65.1 / 4.6

Between 10pm and 11pm

47 / 1.5

Between 11pm and Midnight

16 / 0.5

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

19 ✔

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

32 ✔

Minimum avg. distance in miles

0.39

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

8.0 / 3.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

26,123 ✔

Altitude of departures between 1.5k and 15k feet

11,284 ✔

Altitude of flights below 20k feet

13,128 ✔

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

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

5.13

Tuesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:3 flight events.

4.88

Thursdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

4.67

Mondays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.50

Thursdays between 9:00 and 10:00- 3 time(s) in 4 weeks. Approx:3 flight events.

4.17

Wednesdays between 7:00 and 8:00- 3 time(s) in 4 weeks. Approx:2 flight events.

4.00

Thursdays between 17:00 and 18:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

3.50

Wednesdays between 8:00 and 9:00- 3 time(s) in 4 weeks. Approx:2 flight events.