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 18:27:56

UK Postcode

BROCKENHURST , HAMPSHIRE , SO42 7QP

Baseline geo-coordinates

50.8171 , -1.55543

Survey type

31 days prior to: 01-Sep-2024 @00:05:25

Assessment band

INTERMITTENT

Assessment actual value

4.54

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

1,272 / 41.0 / 2.4 ✔

Flights above 26k feet.

500 / 16.1 / 0.9 ✔

Flights between 16k and 26k feet

365 / 11.8 / 0.7 ❌ (350)

Flights between 13k and 15k feet

17 / 0.5 / 0.0 ✔

Flights between 7k and 12k feet

63 / 2.0 / 0.1 ✔

Flights between 6k and 7k feet

31 / 1.0 / 0.1 ✔

Flights between 5k and 6k feet

15 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

10 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

143 / 4.6 / 0.3 ✔

Flights below 3k feet

128 / 4.1 / 0.2 ✔

4 or more flights per hour

27 / 0.9 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

99 / 3.2 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

14 / 0.5

Between 1am and 2am

4 / 0.1

Between 2am and 3am

Between 3am and 4am

3 / 0.1

Between 4am and 5am

Between 5am and 6am

16 / 0.5

Between 6am and 7am

86 / 2.8

Between 7am and 8am

91 / 2.9

Between 8am and 9pm

1,000 / 32.3 / 2.3

Between 10pm and 11pm

33 / 1.1

Between 11pm and Midnight

21 / 0.7

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

22 ✔

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

51 ❌ (43)

Minimum avg. distance in miles

0.50

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

9.0 / 5.0 / 0.5 ✔

Flight holding stack identified?

No

Altitude for all flights

20,381 ✔

Altitude of departures between 1.5k and 15k feet

7,734 ❌ (8,466)

Altitude of flights below 20k feet

7,824 ❌ (8,790)

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

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

3.00

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

4.83

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

4.50

Saturdays between 16:00 and 17:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.00

Fridays between 14:00 and 15:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

3.67

Tuesdays between 20:00 and 21:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

3.50

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