Assessment ScoreCard – Full

Aircraft Traffic Assessment: Full Scorecard



The symbol indicates the measure is better than the average when compared with other assessed
UK postcodes. The ❌ represents the opposite. Assessed averages are shown in brackets.

See: for a full explanation about the Assessment scorecard.

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

05/02/2021 19:26:50

UK Postcode

CLISSOLD , LONDON , N16 9BP

Baseline geo-coordinates

51.5544 , -0.08956

Survey type

Full. Based on 93 days in 2019, during Mid Dec to Mid Jan, whole of April and August.

Assessment band

HIGH

Assessment actual value

16.47

Assessment description

Sound equates to a busy "A" road or Dual Carriageway i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or busy flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-15. Some of the flights will be below 7000 feet.

Band range

Lower: 16.0 --> Upper: 20.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

9,443 / 101.5 / 6.0 (6,142)

Flights above 26k feet.

1,803 / 19.4 / 1.1 (1,292)

Flights between 16k and 26k feet

703 / 7.6 / 0.4

Flights between 13k and 15k feet

244 / 2.6 / 0.2

Flights between 7k and 12k feet

892 / 9.6 / 0.6

Flights between 6k and 7k feet

2,058 / 22.1 / 1.3 (370)

Flights between 5k and 6k feet

2,734 / 29.4 / 1.7 (493)

Flights between 4k and 5k feet

898 / 9.7 / 0.6 (517)

Flights between 3k and 4k feet

57 / 0.6 / 0.0

Flights below 3k feet

54 / 0.6 / 0.0

4 or more flights per hour

802 / 8.6 (401)

9 or more flights per hour

293 / 3.2 (151)

Departures between 1.5k and 15k feet

104 / 1.1 / 0.1

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

22 / 0.2

1 AM

14 / 0.2

2 AM

16 / 0.2

3 AM

45 / 0.5

4 AM

64 / 0.7

5 AM

148 / 1.6

6 AM

381 / 4.1

7 AM

549 / 5.9

8 AM to 9 PM

7,899 / 84.9 / 6.1

10 PM

196 / 2.1

11 PM

82 / 0.9

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

19 (18)

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

44

Minimum avg. distance in miles

0.71

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

74.0 / 33.0 / 3.9 (45)

Flight holding stack identified?

No

Altitude for all flights

12,460 (19,423)

Altitude of departures between 1.5k and 15k feet

9,798

Altitude of flights below 20k feet

6,904 (9,205)

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

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

14.92

Friday @ 11:00 - 12 time(s) in 13 weeks. Approx:8 flight events.

13.46

Friday @ 12:00 - 12 time(s) in 13 weeks. Approx:7 flight events.

12.00

Friday @ 9:00 - 12 time(s) in 13 weeks. Approx:7 flight events.

15.82

Tuesday @ 18:00 - 11 time(s) in 13 weeks. Approx:9 flight events.

14.23

Tuesday @ 19:00 - 11 time(s) in 13 weeks. Approx:8 flight events.

14.18

Friday @ 8:00 - 11 time(s) in 13 weeks. Approx:8 flight events.

13.36

Wednesday @ 15:00 - 11 time(s) in 13 weeks. Approx:7 flight events.

13.27

Sunday @ 16:00 - 11 time(s) in 13 weeks. Approx:8 flight events.

12.36

Tuesday @ 15:00 - 11 time(s) in 13 weeks. Approx:7 flight events.

Our scorecard is designed to provide a greater understanding how the assessment was reached for your selected UK post code. To enable you to validate our assessment we also provide up to 10 occurrences when we believe the disruption will be at its highest.

For those that would like to perform their own analysis we can also provide the low level flight data that includes the length of time a plane existed inside your select airspace bubble.