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.

Summary Overview

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

08/03/2021 12:18:20

Location

BRONDESBURY , LONDON , NW2 4EU

Baseline geo-coordinates

51.548 , -0.208873

Survey type

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

Assessment band

FREQUENT

Assessment actual value

15.75

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

Flight holding stack identified?

No

Count of Flights & Height Band

Assessment Period / Daily Avg. / Hourly Avg.

Count of ALL flights

6,258 / 67.3 / 4.0 (5,785)

Flights above 26k feet.

1,506 / 16.2 / 1.0 (1,285)

Flights between 16k and 26k feet

368 / 4.0 / 0.2

Flights between 13k and 15k feet

611 / 6.6 / 0.4 (345)

Flights between 7k and 12k feet

570 / 6.1 / 0.4

Flights between 6k and 7k feet

590 / 6.3 / 0.4 (345)

Flights between 5k and 6k feet

1,958 / 21.1 / 1.2 (450)

Flights between 4k and 5k feet

584 / 6.3 / 0.4 (426)

Flights between 3k and 4k feet

33 / 0.4 / 0.0

Flights below 3k feet

38 / 0.4 / 0.0

4 or more flights per hour

461 / 5.0 (383)

9 or more flights per hour

148 / 1.6 (137)

Departures between 1.5k and 15k feet

2,965 / 31.9 / 1.9 (1,026)

Count of Flights by Hour Band

Assessment Period / Day / Hourly Average

0 AM

57 / 0.6

1 AM

60 / 0.6

2 AM

31 / 0.3

3 AM

22 / 0.2

4 AM

14 / 0.2

5 AM

61 / 0.7

6 AM

119 / 1.3

7 AM

329 / 3.5

8 AM to 9 PM

5,011 / 53.9 / 3.8

10 PM

329 / 3.5

11 PM

194 / 2.1

Averages over assessment period

Time in seconds an aircraft existed in the Airspace Bubble

18 (18)

Altitude for all flights

14,259 (19,794)

Altitude of departures between 1.5k and 15k feet

5,560 (8,750)

Altitude of flights below 20k feet

7,669 (9,360)

Number of potential disruptions per day / during out-of-hours

43.0 / 19.0 (41)

Percentage of Pass-bys that occur Out-Of-Hours and at Weekends

45 (44)

Minimum distance from base in miles

0.38

Scale of regular disruption
(0 - low, 25+ high)

Period and Frequency

13.63

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

11.63

Monday @ 18:00 - 8 time(s) in 13 weeks. Approx:7 flight events.

10.94

Friday @ 11:00 - 8 time(s) in 13 weeks. Approx:6 flight events.

10.88

Monday @ 20:00 - 8 time(s) in 13 weeks. Approx:6 flight events.

15.36

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

15.21

Monday @ 19:00 - 7 time(s) in 13 weeks. Approx:8 flight events.

13.21

Saturday @ 16:00 - 7 time(s) in 13 weeks. Approx:7 flight events.

13.07

Monday @ 22:00 - 7 time(s) in 13 weeks. Approx:7 flight events.

12.50

Monday @ 10:00 - 7 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.