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

04/05/2021 14:51:48

UK Postcode

BARNET , LONDON , EN5 2HX

Baseline geo-coordinates

51.6488 , -0.200492

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.67

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

668 / 21.5 / 1.3 ✔

Flights above 26k feet.

182 / 5.9 / 0.3 ❌ (164)

Flights between 16k and 26k feet

45 / 1.5 / 0.1 ✔

Flights between 13k and 15k feet

83 / 2.7 / 0.2 ❌ (34)

Flights between 7k and 12k feet

217 / 7.0 / 0.4 ❌ (107)

Flights between 6k and 7k feet

40 / 1.3 / 0.1 ✔

Flights between 5k and 6k feet

44 / 1.4 / 0.1 ✔

Flights between 4k and 5k feet

3 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

5 / 0.2 / 0.0 ✔

Flights below 3k feet

49 / 1.6 / 0.1 ✔

4 or more flights per hour

15 / 0.5 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

149 / 4.8 / 0.3 ❌ (137)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

5 / 0.2

1 AM

3 / 0.1

2 AM

11 / 0.4

3 AM

5 / 0.2

4 AM

4 / 0.1

5 AM

11 / 0.4

6 AM

20 / 0.6

7 AM

29 / 0.9

8 AM to 9 PM

535 / 17.3 / 1.2

10 PM

18 / 0.6

11 PM

12 / 0.4

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

39 ✔

Minimum avg. distance in miles

0.47

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

7.0 / 3.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

16,610 ✔

Altitude of departures between 1.5k and 15k feet

10,054 ✔

Altitude of flights below 20k feet

9,236 ✔

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

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

5.00

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

4.17

Wednesday @ 11:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

7.50

Sunday @ 11:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

6.75

Friday @ 16:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

5.50

Thursday @ 8:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

5.00

Saturday @ 11:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.75

Tuesday @ 20:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.75

Sunday @ 18:00 - 2 time(s) in 4 weeks. Approx:3 flight events.