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

22/08/2021 21:49:43

UK Postcode

LANGFORD , BEDFORDSHIRE , SG18 9NX

Baseline geo-coordinates

52.0559 , -0.27193

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.78

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

636 / 20.5 / 1.2 ✔

Flights above 26k feet.

171 / 5.5 / 0.3 ✔

Flights between 16k and 26k feet

81 / 2.6 / 0.2 ✔

Flights between 13k and 15k feet

98 / 3.2 / 0.2 ❌ (80)

Flights between 7k and 12k feet

196 / 6.3 / 0.4 ✔

Flights between 6k and 7k feet

5 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

16 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

23 / 0.7 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

45 / 1.5 / 0.1 ✔

4 or more flights per hour

8 / 0.3 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

144 / 4.6 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

27 / 0.9

1 AM

20 / 0.6

2 AM

5 / 0.2

3 AM

4 / 0.1

4 AM

4 / 0.1

5 AM

7 / 0.2

6 AM

23 / 0.7

7 AM

39 / 1.3

8 AM to 9 PM

430 / 13.9 / 1.0

10 PM

34 / 1.1

11 PM

34 / 1.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

18 ✔

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

53 ❌ (41)

Minimum avg. distance in miles

0.45

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

4.0 / 2.0 / 0.2 ✔

Flight holding stack identified?

No

Altitude for all flights

17,831 ✔

Altitude of departures between 1.5k and 15k feet

12,043 ✔

Altitude of flights below 20k feet

10,845 ✔

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

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

9.00

Tuesday @ 21:00 - 2 time(s) in 4 weeks. Approx:6 flight events.

4.75

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

3.00

Wednesday @ 21:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

2.75

Saturday @ 7:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

2.50

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