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

16/01/2022 16:48:49

UK Postcode

HAYES-NORTH , LONDON , BR2 7QG

Baseline geo-coordinates

51.3809 , 0.006832

Survey type

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

Assessment band

REGULAR

Assessment actual value

10.46

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

2,813 / 90.7 / 5.3 ❌ (1,863)

Flights above 26k feet.

547 / 17.6 / 1.0 ❌ (382)

Flights between 16k and 26k feet

122 / 3.9 / 0.2 ✔

Flights between 13k and 15k feet

95 / 3.1 / 0.2 ❌ (80)

Flights between 7k and 12k feet

849 / 27.4 / 1.6 ❌ (227)

Flights between 6k and 7k feet

535 / 17.3 / 1.0 ❌ (131)

Flights between 5k and 6k feet

518 / 16.7 / 1.0 ❌ (209)

Flights between 4k and 5k feet

113 / 3.6 / 0.2 ✔

Flights between 3k and 4k feet

9 / 0.3 / 0.0 ✔

Flights below 3k feet

25 / 0.8 / 0.0 ✔

4 or more flights per hour

269 / 8.7 ❌ (127)

9 or more flights per hour

51 / 1.6 ❌ (49)

Departures between 1.5k and 15k feet

487 / 15.7 / 0.9 ❌ (238)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

9 / 0.3

1 AM

2 / 0.1

2 AM

2 / 0.1

3 AM

16 / 0.5

4 AM

32 / 1.0

5 AM

75 / 2.4

6 AM

189 / 6.1

7 AM

257 / 8.3

8 AM to 9 PM

2,050 / 66.1 / 4.7

10 PM

77 / 2.5

11 PM

23 / 0.7

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

19 ✔

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

48 ❌ (41)

Minimum avg. distance in miles

0.49

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

68.0 / 33.0 / 3.6 ❌ (42)

Flight holding stack identified?

Yes ❌

Altitude for all flights

13,674 ❌ (16,104)

Altitude of departures between 1.5k and 15k feet

10,495 ✔

Altitude of flights below 20k feet

8,077 ✔

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

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

15.80

Friday @ 8:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

12.40

Friday @ 6:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.20

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

10.80

Friday @ 7:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.70

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

10.40

Saturday @ 10:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.00

Sunday @ 10:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.30

Friday @ 14:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

9.10

Sunday @ 9:00 - 4 time(s) in 4 weeks. Approx:5 flight events.