1TCCA Noise Management Study Advisory Committee Meeting

Meeting Room C, City Hall, Toronto - February 18, 2009

NOISE MANAGEMENT STUDY –TORONTO CITY CENTRE AIRPORT

STUDY ADVISORY COMMUNITY MEETING

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MEETING AGENDA

Study Scope & Work Plan Community Consultation Process Aircraft Noise Monitoring Process Aircraft Noise Reporting Process Noise Modelling Approach Q-400 Noise Certification Limits Airport Curfew Study Process Going Forward

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STUDY SCOPE & WORK PLAN

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COMMUNITY CONSULTATION PROCESS

Establishment of Noise Study Community Advisory Committee

Stages of Community Involvement to Study: Initial Advisory Committee Meeting Follow-up Advisory Committee Meeting Prior to

Issuance of Draft Report (Conclusions and Recommendations).

Community Meeting to Present Draft Report

Study will address on-going community involvement in noise management program.

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STUDY NOISE MONITORING PROCESS

Set-up portable noise monitoring equipment & measured noise levels over a continuous two-day period (from 06:00 to 23:00).

Continuous visual monitoring & recording of airport activity (from old ATC roof) during the same period.

4 Locations – September 8-10, 2008 2 Locations – November 11-13, 2008Monitoring Under Various Atmospheric Conditions:

September 8 – 14C, Overcast and Light rain in evening September 9 – 15C, Partly Cloud, N Wind (5-10 kph) September 10 – 10C, Clear, Light NE Wind November 11 – 4 to 6C, Clear, Light W Wind (13-28 kph) November 12 – 4 to 6C, Clear, NE Wind (11-32 kph) November 13 – 7 to 8C, Cloudy/Rain, SE-S Wind (9-24 kph)

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STUDY NOISE MONITORING LOCATIONS

LEGEND:

SEPT 8-10, 2008

NOV. 14-16, 2008

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STUDY NOISE MONITORING PROCESS

Two locations at existing permanent noise monitoring locations were used to validate data.

Other locations were used to valid the NEF contours to be prepared under the Study.

The visual monitoring was used to discern whether specific elevated noise events were related to airport activity.

Information will also be used to identify potential mitigation measure or improved procedures.

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STUDY NOISE MONITORING PROCESS

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NOISE EXPOSURE FORECASTS (NEF)

In Canada, aircraft noise limitations are expressed as Noise Exposure Forecast (NEF).

NEF combines the noise levels of individual aircraft and the numbers of aircraft to give a single number rating of the average impact of the aircraft noise.

Nighttime operations are heavily weighted.

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NOISE LIMITATIONS AT TCCA

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AIRCRAFT NOISE MODELLING

Study will utilize state-of-the-art FAA Integrated Noise Model (INM), Version 7a

The advantages of using INM are: Extensive database of noise-thrust-distance

relationships for most civil aircraft Better models realistic aircraft flight tracks Allows for factoring of aircraft take-off dispersal

Study will utilize INM to update NEFs using: Current aircraft & rotorcraft movement data (2008); Current and future aircraft types (incl. Q-400); Current runway usage distribution and flight

patterns

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AIRCRAFT NOISE MODELLING

Disadvantages of the NEF contours: They are generally only meant to be used as a

tool for land use planning control. Only takes into account aircraft noise, not

background noise from other sources (i.e. automobiles, trains, pedestrians, ships, wave action).

Difficult for the public to understand what the NEF contour values actually represent.

There are other methods of noise modellingused in other sectors.

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COMMUNITY NOISE MODELLING

CADNA developed and extensively used in Europe, primarily for mapping community noise levels from transportation and industrial sources.

Accepted by MOE for environmental assessments in Ontario.

CADNA takes into account: Noise from various sources using current traffic volume and

speed data Takes into account physical features (i.e. bldgs) Road and rail traffic

Advantages: Enables mapping of large areas and simultaneous effect of

multiple sources. More realistic and visual model of acoustic environment.

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COMMUNITY NOISE MODELLING

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TCCA – NOISE REPORTING PROCESS

2 Continuous Noise Monitoring Stations;Noise Reports received via:

TPA website (95%) Dedicated telephone (3% - 4%) E-mails and phone calls directly to staff (1%)

Noise Reports investigated via: Noise monitoring stations; Link to NavCanada radar; Control tower data sheets.

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TCCA – NOISE REPORTING SUMMARY

Noise Reporting (2007)

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TCCA – NOISE REPORTING SUMMARY

Noise Reports by Time of Day (2007)

10%

18%

29%

43%

Midnight - 0644

0645 - Noon

Noon - 1759

1759 - Midnight

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TCCA – NOISE REPORTING SUMMARY

Noise Reports by Phase of Operation (2007)

20%

14%

56%

7% 3% Approach/Landing

Departure/Takeoff

Overflight

On Ground

Unknown

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TCCA – NOISE REPORTING SUMMARY

Noise Reports by Type (2007)

22%

16%62%

Noise

Presence of Aircraft

Noise & Presence

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CHANGES TO NOISE REPORTING

Changes to Web Reporting Form (more detailed info for improved analysis).

Written or E-mail response within 96 hrs.Noise reference materials on website and

printed media for better public understanding.

Improved monthly and annual summary of reported noise events.

Discuss & resolve specific reported noise events on a quarterly basis.

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NOISE CERTIFICATIONS LEVELS

Contains “special conditions” for noise abatement.One of these “special conditions” is a prohibition

on: “aircraft generating excessive noise”.Four categories of aircraft are defined:

Propeller driven aeroplanes not exceeding 5,700 kg maximum takeoff weight (MTOW);

Propeller driven aeroplanes exceeding 5,700 kg MTOW other than short takeoff and landing (STOL) aircraft;

Propeller driven aeroplanes exceeding 5,700 kg MTOW and classified as STOL aircraft; and,

Propeller driven aeroplanes not in ICAO listing.

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NOISE CERTIFICATIONS LEVELS

Q-400 has a MTOW of 28,998 kg.Q-400 is not classified as a STOL aircraft.Fits into the second category of the aircraft defined

by the Tripartite Agreement.For this category the Tripartite Agreement

stipulates noise levels under 3 flight conditions: 84.0 Effective Perceived Noise in Decibels (EPNdB)

on takeoff (flyover) 83.5 EPNdB on sideline at takeoff (lateral to flight

path) 92.0 EPNdB on approach.

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Bombardier Q-400

30 different versions listedDivided into three groupings:

Dash 8 – Q400; Dash 8 – Q401; Dash 8 – Q402

All aircraft operated by Porter Airlines are the Dash 8 – Q402

MTOW of 28,998 kgMLW of 28,009 kgModification of Engine Revolution on Approach

at 850rpmDocumented as Modification No. 39

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Bombardier Q-400-402

The certification noise levels for this aircraft version are: 78.0 EPNdB on takeoff (flyover) 84.0 EPNdB on sideline at takeoff (lateral to flight

path) 93.1 EPNdB on approach

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TRIPARTITE AGREEMENT COMPLIANCE

Tripartite Agreement states that the noise levels are to be calculated in accordance with ICAO, Annex 16, Chapter 5 and Appendix 2.

Annex 16, Chapter 5, under 5.5 permits “Trade-Offs” for the three various noise levels.

“If the maximum noise levels are exceeded at one or two measurement points”: any excess at any single point shall not be greater

than 2 EPNdB; the sum of excesses shall not be greater than 3

EPNdB; and, any excesses shall be offset by corresponding

reductions at the other point or points.”

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TRIPARTITE AGREEMENT COMPLIANCE

9293.1Approach

83.584Lateral

8478Flyover

TripartiteQ402

Comparison of Q400 to Limits in Tripartite

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TRIPARTITE AGREEMENT COMPLIANCE

1.19293.1Approach

0.583.584Lateral

-68478Flyover

DifferenceTripartiteQ402

Two levels are exceeded however individually, not more than 2.0 EPNdB

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TRIPARTITE AGREEMENT COMPLIANCE

1.6Total Excess Values

1.19293.1Approach0.583.584Lateral -68478Flyover

DifferenceTripartiteQ402

The sum of the two excesses total 1.6 which is less than the 3.0 EPNdB

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TRIPARTITE AGREEMENT COMPLIANCE

-6Total Reduction Values1.6Total Excess Values

1.19293.1Approach0.583.584Lateral -68478Flyover

DifferenceTripartiteQ402

The excesses are offset by the reduction for a net reduction of 4.4 EPNdB

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TRIPARTITE AGREEMENT COMPLAINCE

The Dash 8-Q400-402 aircraft used by Porter Airlines has noise levels below the criteria for an

“aircraft generating excessive noise” is compliant with the Tripartite Agreement

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STEPS GOING FORWARD

THANK YOU FOR YOUR TIMEAND CONSIDERATION

QUESTIONS OR COMMENTS?