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

17/06/2022 21:44:58

UK Postcode

EALING-COMMON-TWYFORD-AVE , LONDON , W3 9SG

Baseline geo-coordinates

51.51 , -0.282419

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.50

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

5,029 / 162.2 / 9.5 ❌ (3,289)

Flights above 26k feet.

829 / 26.7 / 1.6 ❌ (637)

Flights between 16k and 26k feet

1,961 / 63.3 / 3.7 ❌ (309)

Flights between 13k and 15k feet

1,889 / 60.9 / 3.6 ❌ (143)

Flights between 7k and 12k feet

175 / 5.6 / 0.3 ✔

Flights between 6k and 7k feet

16 / 0.5 / 0.0 ✔

Flights between 5k and 6k feet

29 / 0.9 / 0.1 ✔

Flights between 4k and 5k feet

58 / 1.9 / 0.1 ✔

Flights between 3k and 4k feet

31 / 1.0 / 0.1 ✔

Flights below 3k feet

41 / 1.3 / 0.1 ✔

4 or more flights per hour

469 / 15.1 ❌ (211)

9 or more flights per hour

200 / 6.5 ❌ (91)

Departures between 1.5k and 15k feet

79 / 2.5 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

106 / 3.4

1 AM

68 / 2.2

2 AM

54 / 1.7

3 AM

17 / 0.5

4 AM

22 / 0.7

5 AM

31 / 1.0

6 AM

93 / 3.0

7 AM

186 / 6.0

8 AM to 9 PM

3,886 / 125.4 / 9.0

10 PM

255 / 8.2

11 PM

258 / 8.3

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

46 ❌ (42)

Minimum avg. distance in miles

0.38

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

128.0 / 58.0 / 6.7 ❌ (78)

Flight holding stack identified?

No

Altitude for all flights

18,583 ✔

Altitude of departures between 1.5k and 15k feet

4,451 ❌ (7,614)

Altitude of flights below 20k feet

15,377 ✔

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

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

17.30

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

17.20

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

16.80

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

15.90

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

15.80

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

15.60

Wednesday @ 16:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

15.50

Thursday @ 15:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

15.20

Wednesday @ 12:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

15.10

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