Airspace and System Challenges – Challenges

and Opportunities

Jeff Cochrane Director Navigation and Airspace

NAV CANADA

Balancing the challenges

• Safety • Flight efficiency • Service provision efficiency • Aviation emissions • Noise exposure

Windsor – Toronto – Montreal (WTM) Airspace Redesign

CYYZ – Toronto Pearson

431,000 Movements in 2013 Ranked 17th busiest airport

Windsor-Toronto-Montreal Corridor ~3,000 IFR flights per day

Pre-WTM STAR WTM STAR

Customer quantified benefits

WestJet Airlines Savings – Feb 2012-Feb 2013

Noise Modelling

Windsor – Toronto – Montreal (WTM) Airspace Redesign – we were listening

Windsor – Toronto – Montreal (WTM) Airspace Redesign

Windsor – Toronto – Montreal (WTM) Typical decibel readings*

Higher does not always mean quieter • Noise emitted is highly dependant on individual

flight profile (aircraft configuration, flaps, etc.)

Rule of thumb 250 seat twin aisle jet @ 3,000 ft is 68 dBA and @ 4,000 ft is 64 dBA 70-90 seat Regional Jet @ 3,000 ft is 61 dBA and @4,000 ft is 57 dBA

A 3dB change is the minimal that is detectable by the human ear

57.2 dBA = CRJ-200 at 4,500 ft

65.2 dBA = Challenger 300 at 5,000 ft

59.9 dBA = CRJ-200 at 4,200 ft

70.8 dBA = CRJ-900 at 4,500 ft

Sample readings

62.2 dBA = B738 at 4,500 ft

70.0 dBA = DH8A at 3,800 ft

63.5 dBA = B1900 at 4,100 ft

* 259 flights at approx 3800 feet above ground

Proposed Airspace Change Protocol

• Set expectations • Engage stakeholders and

communities • Transparency in change

management • What is proposed • Why it is needed • What are the impacts • What additional considerations

need to be addressed • Clear and timely communication