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

17/05/2022 19:01:46

UK Postcode

SNATCHILL-CORBY , NORTHAMPTONSHIRE , NN18 8NW

Baseline geo-coordinates

52.4723 , -0.708851

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.06

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

894 / 28.8 / 1.7 ✔

Flights above 26k feet.

392 / 12.6 / 0.7 ✔

Flights between 16k and 26k feet

407 / 13.1 / 0.8 ❌ (306)

Flights between 13k and 15k feet

13 / 0.4 / 0.0 ✔

Flights between 7k and 12k feet

17 / 0.5 / 0.0 ✔

Flights between 6k and 7k feet

3 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

1 / 0.0 / 0.0 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

9 / 0.3 / 0.0 ✔

Flights below 3k feet

46 / 1.5 / 0.1 ✔

4 or more flights per hour

13 / 0.4 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

7 / 0.2 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

18 / 0.6

1 AM

10 / 0.3

2 AM

7 / 0.2

3 AM

4 / 0.1

4 AM

2 / 0.1

5 AM

5 / 0.2

6 AM

13 / 0.4

7 AM

33 / 1.1

8 AM to 9 PM

760 / 24.5 / 1.8

10 PM

19 / 0.6

11 PM

20 / 0.6

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

14 ✔

Minimum avg. distance in miles

0.44

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

2.0 / 0.0 / 0.1 ✔

Flight holding stack identified?

No

Altitude for all flights

24,558 ✔

Altitude of departures between 1.5k and 15k feet

7,010 ❌ (7,594)

Altitude of flights below 20k feet

12,121 ✔

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

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

3.50

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

3.25

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

7.00

Thursday @ 16:00 - 1 time(s) in 4 weeks. Approx:3 flight events.

6.00

Thursday @ 15:00 - 1 time(s) in 4 weeks. Approx:3 flight events.

5.00

Tuesday @ 15:00 - 1 time(s) in 4 weeks. Approx:2 flight events.

4.50

Monday @ 13:00 - 1 time(s) in 4 weeks. Approx:3 flight events.