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

03/09/2020 15:20:31

Location

NORTH-MARDEN , WEST SUSSEX , PO18 9JX

Baseline geo-coordinates

50.9493 , -0.849599

Survey type

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

Assessment band

MINIMAL

Assessment actual value

3.60

Assessment description

Sound equates to a quiet country lane i.e. irregular and low volume traffic. However, occasionally some of the flights could be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 0.0 --> Upper: 4.0

Flight holding stack identified?

No

Count of Flights & Height Band

Assessment Period / Daily Average

Count of ALL flights

3,242 / 34.9

Flights above 26k feet.

2,340 / 25.2 (1,278)

Flights between 16k and 26k feet

183 / 2.0

Flights between 13k and 15k feet

255 / 2.7

Flights between 7k and 12k feet

379 / 4.1

Flights between 6k and 7k feet

26 / 0.3

Flights between 5k and 6k feet

0

Flights between 4k and 5k feet

2 / 0.0

Flights between 3k and 4k feet

10 / 0.1

Flights below 3k feet

47 / 0.5

4 or more flights per hour

7 / 0.1

9 or more flights per hour

0 / 0.0

Departures between 1.5k and 15k feet

104 / 1.1

Count of Flights by Hour Band

Assessment Period / Day / Hourly Average

0 AM

13 / 0.1

1 AM

6 / 0.1

2 AM

5 / 0.1

3 AM

5 / 0.1

4 AM

13 / 0.1

5 AM

59 / 0.6

6 AM

150 / 1.6

7 AM

222 / 2.4

8 AM to 9 PM

2,592 / 27.9 / 2.0

10 PM

123 / 1.3

11 PM

31 / 0.3

Averages over assessment period

Time in seconds an aircraft existed in the Airspace Bubble

14

Altitude for all flights

27,868

Altitude of departures between 1.5k and 15k feet

10,828

Altitude of flights below 20k feet

12,360

Number of disruptions per day

2.0

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

57 (44)

Minimum distance from base in miles

0.69

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

Period and Frequency

2.67

Saturday @ 15:00 - 3 time(s) in 13 weeks. Approx:2 flight events.

4.75

Thursday @ 17:00 - 2 time(s) in 13 weeks. Approx:3 flight events.

4.50

Tuesday @ 21:00 - 2 time(s) in 13 weeks. Approx:4 flight events.

3.00

Saturday @ 6:00 - 2 time(s) in 13 weeks. Approx:3 flight events.

2.75

Tuesday @ 13:00 - 2 time(s) in 13 weeks. Approx:3 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.