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

02/10/2021 13:10:32

UK Postcode

HILTINGBURY , HAMPSHIRE , SO53 1LD

Baseline geo-coordinates

50.9943 , -1.3859

Survey type

31 Day. Based on the 31 days prior to the survey date shown above.

Assessment band

OCCASIONAL

Assessment actual value

5.09

Assessment description

Sound equates to a "C" road or an active country lane i.e. irregular traffic volumes. Location is on a flight route as opposed to a flight corridor. Some of the flights will be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

785 / 25.3 / 1.5 ✔

Flights above 26k feet.

350 / 11.3 / 0.7 ✔

Flights between 16k and 26k feet

231 / 7.5 / 0.4 ❌ (175)

Flights between 13k and 15k feet

62 / 2.0 / 0.1 ✔

Flights between 7k and 12k feet

32 / 1.0 / 0.1 ✔

Flights between 6k and 7k feet

15 / 0.5 / 0.0 ✔

Flights between 5k and 6k feet

42 / 1.4 / 0.1 ✔

Flights between 4k and 5k feet

15 / 0.5 / 0.0 ✔

Flights between 3k and 4k feet

18 / 0.6 / 0.0 ✔

Flights below 3k feet

20 / 0.6 / 0.0 ✔

4 or more flights per hour

16 / 0.5 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

93 / 3.0 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

2 / 0.1

1 AM

2 AM

4 / 0.1

3 AM

1 / 0.0

4 AM

2 / 0.1

5 AM

3 / 0.1

6 AM

35 / 1.1

7 AM

71 / 2.3

8 AM to 9 PM

645 / 20.8 / 1.5

10 PM

8 / 0.3

11 PM

2 / 0.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

16 ✔

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

30 ✔

Minimum avg. distance in miles

0.46

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

5.0 / 2.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

23,110 ✔

Altitude of departures between 1.5k and 15k feet

7,782 ✔

Altitude of flights below 20k feet

12,574 ✔

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

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

5.33

Friday @ 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

2.50

Friday @ 14:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

7.25

Saturday @ 10:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

5.75

Tuesday @ 14:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

5.25

Tuesday @ 12:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.75

Sunday @ 14:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.50

Friday @ 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.25

Saturday @ 14:00 - 2 time(s) in 4 weeks. Approx:3 flight events.