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

16/03/2022 20:33:16

UK Postcode

WILLIAM-MORRIS , LONDON , E17 6HB

Baseline geo-coordinates

51.5899 , -0.032087

Survey type

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

Assessment band

REGULAR

Assessment actual value

8.21

Assessment description

Sound equates to a "B" road or busy "C" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a secondary 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 4. Some of the flights will be below 7000 feet.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,481 / 47.8 / 2.8 ✔

Flights above 26k feet.

447 / 14.4 / 0.8 ✔

Flights between 16k and 26k feet

133 / 4.3 / 0.3 ✔

Flights between 13k and 15k feet

44 / 1.4 / 0.1 ✔

Flights between 7k and 12k feet

314 / 10.1 / 0.6 ✔

Flights between 6k and 7k feet

349 / 11.3 / 0.7 ❌ (189)

Flights between 5k and 6k feet

117 / 3.8 / 0.2 ✔

Flights between 4k and 5k feet

20 / 0.6 / 0.0 ✔

Flights between 3k and 4k feet

9 / 0.3 / 0.0 ✔

Flights below 3k feet

48 / 1.5 / 0.1 ✔

4 or more flights per hour

106 / 3.4 ✔

9 or more flights per hour

8 / 0.3 ✔

Departures between 1.5k and 15k feet

56 / 1.8 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

5 / 0.2

1 AM

6 / 0.2

2 AM

3 / 0.1

3 AM

10 / 0.3

4 AM

5 / 0.2

5 AM

12 / 0.4

6 AM

97 / 3.1

7 AM

94 / 3.0

8 AM to 9 PM

1,182 / 38.1 / 2.7

10 PM

32 / 1.0

11 PM

11 / 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

38 ✔

Minimum avg. distance in miles

0.47

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

26.0 / 10.0 / 1.4 ✔

Flight holding stack identified?

No

Altitude for all flights

16,610 ✔

Altitude of departures between 1.5k and 15k feet

9,346 ✔

Altitude of flights below 20k feet

7,973 ✔

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

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

9.88

Tuesday @ 9:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

8.75

Monday @ 10:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.38

Friday @ 8:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.75

Monday @ 15:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.00

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

6.38

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

5.25

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

3.63

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:3 flight events.