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

16/10/2020 13:42:34

UK Postcode

EALING-COMMON , LONDON , W5 3JG

Baseline geo-coordinates

51.5083 , -0.29572

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.45

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

2,226 / 71.8 / 4.2 ❌ (1,849)

Flights above 26k feet.

284 / 9.2 / 0.5 ✔

Flights between 16k and 26k feet

549 / 17.7 / 1.0 ❌ (175)

Flights between 13k and 15k feet

598 / 19.3 / 1.1 ❌ (80)

Flights between 7k and 12k feet

191 / 6.2 / 0.4 ✔

Flights between 6k and 7k feet

20 / 0.6 / 0.0 ✔

Flights between 5k and 6k feet

116 / 3.7 / 0.2 ✔

Flights between 4k and 5k feet

275 / 8.9 / 0.5 ❌ (205)

Flights between 3k and 4k feet

162 / 5.2 / 0.3 ❌ (158)

Flights below 3k feet

31 / 1.0 / 0.1 ✔

4 or more flights per hour

227 / 7.3 ❌ (127)

9 or more flights per hour

32 / 1.0 ✔

Departures between 1.5k and 15k feet

575 / 18.5 / 1.1 ❌ (239)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

20 / 0.6

1 AM

11 / 0.4

2 AM

3 / 0.1

3 AM

7 / 0.2

4 AM

6 / 0.2

5 AM

15 / 0.5

6 AM

40 / 1.3

7 AM

135 / 4.4

8 AM to 9 PM

1,778 / 57.4 / 4.1

10 PM

102 / 3.3

11 PM

81 / 2.6

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

39 ✔

Minimum avg. distance in miles

0.68

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

53.0 / 21.0 / 2.8 ❌ (41)

Flight holding stack identified?

No

Altitude for all flights

14,927 ❌ (16,135)

Altitude of departures between 1.5k and 15k feet

4,481 ❌ (7,666)

Altitude of flights below 20k feet

11,762 ✔

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

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

12.90

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

12.10

Thursday @ 14:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.80

Wednesday @ 15:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

8.60

Thursday @ 12:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

8.20

Thursday @ 18:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.10

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

6.40

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

17.50

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

17.38

Friday @ 13:00 - 4 time(s) in 4 weeks. Approx:9 flight events.