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

10/05/2023 10:10:27

UK Postcode

QUEENS-PARK-6LN , LONDON , NW6 6LN

Baseline geo-coordinates

51.5371 , -0.208221

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.68

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

2,004 / 64.6 / 3.8 ✔

Flights above 26k feet.

479 / 15.5 / 0.9 ✔

Flights between 16k and 26k feet

160 / 5.2 / 0.3 ✔

Flights between 13k and 15k feet

149 / 4.8 / 0.3 ❌ (141)

Flights between 7k and 12k feet

121 / 3.9 / 0.2 ✔

Flights between 6k and 7k feet

110 / 3.5 / 0.2 ✔

Flights between 5k and 6k feet

640 / 20.6 / 1.2 ❌ (303)

Flights between 4k and 5k feet

299 / 9.6 / 0.6 ❌ (262)

Flights between 3k and 4k feet

22 / 0.7 / 0.0 ✔

Flights below 3k feet

24 / 0.8 / 0.0 ✔

4 or more flights per hour

175 / 5.6 ✔

9 or more flights per hour

35 / 1.1 ✔

Departures between 1.5k and 15k feet

1,027 / 33.1 / 1.9 ❌ (427)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

20 / 0.6

1 AM

17 / 0.5

2 AM

8 / 0.3

3 AM

7 / 0.2

4 AM

9 / 0.3

5 AM

21 / 0.7

6 AM

68 / 2.2

7 AM

97 / 3.1

8 AM to 9 PM

1,637 / 52.8 / 3.8

10 PM

67 / 2.2

11 PM

38 / 1.2

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

31 ✔

Minimum avg. distance in miles

0.48

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

42.0 / 13.0 / 2.2 ✔

Flight holding stack identified?

No

Altitude for all flights

13,971 ❌ (15,964)

Altitude of departures between 1.5k and 15k feet

5,326 ❌ (7,624)

Altitude of flights below 20k feet

7,392 ❌ (7,925)

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

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

8.88

Monday @ 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

7.63

Tuesday @ 19:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

27.00

Thursday @ 16:00 - 3 time(s) in 4 weeks. Approx:13 flight events.

16.83

Wednesday @ 16:00 - 3 time(s) in 4 weeks. Approx:8 flight events.

16.17

Wednesday @ 14:00 - 3 time(s) in 4 weeks. Approx:8 flight events.

15.17

Tuesday @ 17:00 - 3 time(s) in 4 weeks. Approx:8 flight events.

14.50

Friday @ 15:00 - 3 time(s) in 4 weeks. Approx:8 flight events.