AIRCRAFT NOISE Part 2

Managing Aircraft Noise Disturbance

Callum Thomas

The Cause of the ProblemThe Cause of the Problem

Managing Aircraft NoiseManaging Aircraft Noise

Peak Noise Levels ReducingPeak Noise Levels Reducing

Area of Impact is ReducingArea of Impact is Reducing

Population Affected Is ReducingPopulation Affected Is Reducing

0

20

40

60

80

100

120

140

160

74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94

Aircraft Movements Population affected by 3 5 N NI/ 5 7 LEq

(index 1974=100)

But Growth too Strong and But Growth too Strong and Attitudes HardeningAttitudes Hardening

So a Step Change So a Step Change in Technology is Neededin Technology is Needed

OperationsOperationsQuiet Takeoff ProceduresQuiet Takeoff Procedures

OperationsOperationsContinuous Descent ApproachContinuous Descent Approach

Preferred Noise RoutesPreferred Noise Routes

Operations Operations Ground NoiseGround Noise

Operational RestrictionsOperational RestrictionsNight NoiseNight Noise

• Sleep disturbanceSleep disturbance

• Night closureNight closure

• Movement limitsMovement limits

• Only quietest aircraftOnly quietest aircraft

InfrastructureInfrastructure

Land Use PlanningLand Use Planning• Prevents noise sensitive Prevents noise sensitive

developments in high noise areasdevelopments in high noise areas

• Lacking in many countriesLacking in many countries

• Not enforced in others.Not enforced in others.

Sound Insulation In Sound Insulation In PropertiesProperties

• Noise contourNoise contour

• Size of grantSize of grant

• ProvisionsProvisions

• LifestylesLifestyles

Noise Compensation Noise Compensation SchemesSchemes

• Payment to people who suffer a step change Payment to people who suffer a step change in noise climate.in noise climate.

• Compensatory payment.Compensatory payment.

• Complex science determines amount paid.Complex science determines amount paid.

• Different from Land Compensation ActDifferent from Land Compensation Act

House PurchaseHouse Purchase• Payments for people to enable them to Payments for people to enable them to

move to lower noise areas.move to lower noise areas.

• Apply when there is a step change in Apply when there is a step change in noise climate.noise climate.

• Land compensation act a separate issueLand compensation act a separate issue

The Critical QuestionThe Critical Question

• How to achieve a balance between:How to achieve a balance between:

– the ‘the ‘benefitsbenefits’ of airport growth - enjoyed by ’ of airport growth - enjoyed by millions millions

andand

– the ‘the ‘costscosts’ (noise disturbance) - affecting ’ (noise disturbance) - affecting thousandsthousands

Minimising Noise Minimising Noise ‘Disturbance’‘Disturbance’

• Reduce Noise ExposureReduce Noise Exposure

• Increase Community Tolerance Increase Community Tolerance