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

08/09/2022 20:29:07

UK Postcode

CORBY-SNATCHILL , NORTHAMPTONSHIRE , NN18 8LN

Baseline geo-coordinates

52.4729 , -0.712998

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

INTERMITTENT

Assessment actual value

6.49

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

3,768 / 121.5 / 7.1 ❌ (3,399)

Flights above 26k feet.

1,675 / 54.0 / 3.2 ❌ (720)

Flights between 16k and 26k feet

1,730 / 55.8 / 3.3 ❌ (324)

Flights between 13k and 15k feet

51 / 1.6 / 0.1 ✔

Flights between 7k and 12k feet

43 / 1.4 / 0.1 ✔

Flights between 6k and 7k feet

8 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

7 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

18 / 0.6 / 0.0 ✔

Flights between 3k and 4k feet

61 / 2.0 / 0.1 ✔

Flights below 3k feet

175 / 5.6 / 0.3 ✔

4 or more flights per hour

237 / 7.6 ❌ (217)

9 or more flights per hour

24 / 0.8 ✔

Departures between 1.5k and 15k feet

30 / 1.0 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

59 / 1.9

1 AM

49 / 1.6

2 AM

40 / 1.3

3 AM

8 / 0.3

4 AM

4 / 0.1

5 AM

12 / 0.4

6 AM

71 / 2.3

7 AM

139 / 4.5

8 AM to 9 PM

3,154 / 101.7 / 7.3

10 PM

132 / 4.3

11 PM

64 / 2.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

43 ❌ (23)

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

33 ✔

Minimum avg. distance in miles

1.49

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

25.0 / 8.0 / 1.3 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

24,917 ✔

Altitude of departures between 1.5k and 15k feet

9,875 ✔

Altitude of flights below 20k feet

13,536 ✔

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

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

6.70

Tuesday @ 13:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

6.40

Wednesday @ 17:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

6.30

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

4.60

Tuesday @ 9:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

4.50

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

4.40

Wednesday @ 13:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

11.25

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.25

Sunday @ 16:00 - 4 time(s) in 4 weeks. Approx:6 flight events.