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

06/07/2022 07:01:51

UK Postcode

BARNET , LONDON , EN5 2HX

Baseline geo-coordinates

51.6488 , -0.200492

Survey type

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

Assessment band

FREQUENT

Assessment actual value

14.93

Assessment description

Sound equates to an "A" road or a busy "B" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-10. Some of the flights will be below 7000 feet.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

5,987 / 193.1 / 11.4 ❌ (3,135)

Flights above 26k feet.

545 / 17.6 / 1.0 ✔

Flights between 16k and 26k feet

388 / 12.5 / 0.7 ❌ (309)

Flights between 13k and 15k feet

2,949 / 95.1 / 5.6 ❌ (135)

Flights between 7k and 12k feet

1,543 / 49.8 / 2.9 ❌ (431)

Flights between 6k and 7k feet

185 / 6.0 / 0.4 ❌ (182)

Flights between 5k and 6k feet

99 / 3.2 / 0.2 ✔

Flights between 4k and 5k feet

5 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

85 / 2.7 / 0.2 ✔

Flights below 3k feet

188 / 6.1 / 0.4 ✔

4 or more flights per hour

518 / 16.7 ❌ (203)

9 or more flights per hour

294 / 9.5 ❌ (83)

Departures between 1.5k and 15k feet

97 / 3.1 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

120 / 3.9

1 AM

75 / 2.4

2 AM

47 / 1.5

3 AM

14 / 0.5

4 AM

9 / 0.3

5 AM

44 / 1.4

6 AM

144 / 4.6

7 AM

328 / 10.6

8 AM to 9 PM

4,728 / 152.5 / 10.9

10 PM

217 / 7.0

11 PM

241 / 7.8

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

43 ❌ (43)

Minimum avg. distance in miles

0.53

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

165.0 / 72.0 / 8.7 ❌ (72)

Flight holding stack identified?

No

Altitude for all flights

14,278 ❌ (16,202)

Altitude of departures between 1.5k and 15k feet

7,947 ✔

Altitude of flights below 20k feet

11,765 ✔

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

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

24.80

Monday @ 11:00 - 4 time(s) in 4 weeks. Approx:18 flight events.

23.40

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

22.10

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

19.60

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

19.40

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

19.20

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

18.60

Tuesday @ 12:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

18.00

Monday @ 18:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

17.00

Tuesday @ 13:00 - 4 time(s) in 4 weeks. Approx:12 flight events.