Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of between 30 and 40 dBs i.e. a quiet residential area. Typically the noise from an overflying aircraft is between 50-65 dBs. If your property is located near to a busy road i.e. 70-75 dBs, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Overflying aircraft noise typically has a duration of 30-50 seconds, the higher the plane the longer the duration. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

10/09/2025 10:29:03

UK Postcode Area

LYMINGTON-TOWN-AUG25, HAMPSHIRE, SO41 3NP

Baseline geo-coordinates

50.7552 , -1.54548

Survey type

31 days prior to: 31-Aug-2025 @22:19:44

Assessment band

INTERMITTENT

Assessment actual value

4.97

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

2,630 / 84.8 / 5.0 ✔

Flights above 26k feet.

1,137 / 36.7 / 2.2 ❌ (760)

Flights between 16k and 26k feet

1,119 / 36.1 / 2.1 ❌ (354)

Flights between 13k and 15k feet

26 / 0.8 / 0.0 ✔

Flights between 7k and 12k feet

66 / 2.1 / 0.1 ✔

Flights between 6k and 7k feet

23 / 0.7 / 0.0 ✔

Flights between 5k and 6k feet

12 / 0.4 / 0.0 ✔

Flights between 4k and 5k feet

68 / 2.2 / 0.1 ✔

Flights between 3k and 4k feet

106 / 3.4 / 0.2 ✔

Flights below 3k feet

73 / 2.4 / 0.1 ✔

4 or more flights per hour

137 / 4.4 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

46 / 1.5 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

7 / 0.2

Between 1am and 2am

4 / 0.1

Between 2am and 3am

4 / 0.1

Between 3am and 4am

Between 4am and 5am

4 / 0.1

Between 5am and 6am

25 / 0.8

Between 6am and 7am

192 / 6.2

Between 7am and 8am

237 / 7.6

Between 8am and 9pm

2,049 / 66.1 / 4.7

Between 10pm and 11pm

59 / 1.9

Between 11pm and Midnight

30 / 1.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

17 ✔

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

44 ❌ (44)

Minimum avg. distance in miles

0.41

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

14.0 / 6.0 / 0.7 ✔

Flight holding stack identified?

No

Altitude for all flights

24,153 ✔

Altitude of departures between 1.5k and 15k feet

8,776 ✔

Altitude of flights below 20k feet

11,374 ✔

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

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

3.90

Fridays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.75

Saturdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.50

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

4.75

Sundays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

3.88

Mondays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

5.17

Fridays between 12:00 and 13:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

5.00

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