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Calgary Alternate Departure Heading Trial

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Enhancing operations and reducing the industry’s environmental impact

1. Get the basics

Prior to the trial, aircraft departing the airport (taking off) would climb on—or with a slight deviation from—runway heading. The regular departure heading for both runways 17L and 17R is 165° but heading 155 is used for runway 17L when two runways are being used for simultaneous departures. While these departure headings are necessary to the consistent and safe management of traffic at YYC, the trial will evaluate a second set of headings that will be applied tactically when conditions permit.

Figure 1: Calgary Airport operates in one of two modes for arrivals and departures when using parallel runways: aircraft arrive on one or two runway(s) and depart one runway (maps on left); or aircraft arrive on two runways and depart two runways (map on right).

Trial Departure Operations

In addition to using existing headings for departures, air traffic controllers will be able to assign heading 135° for departures from runway 17R and heading 185° for departures from runway 17L. These headings will be used based on the flight plan of the departing aircraft.

Operational Considerations

Historically, the distribution between a north (35 L/R) and south flow (17 L/R) has been approximately even; the new headings will only apply when departing runways 17 L/R. It is not anticipated that the trial will affect flow direction, as this is primarily determined by wind and weather conditions.

The ability to apply the Alternating Departure Headings may be further impacted by weather, capacity considerations, construction, runway surface conditions, ground infrastructure, taxiing requirements, traffic and fleet mix and operator requests.

2. Attend an Information session

NAV CANADA will be hosting virtual consultation events to share information, answer your questions and seek you input on the trial. The consultation events will include a briefing by subject matter experts on the trial including its use to-date, followed by time for questions and discussion. If you can’t make the event – don’t worry – we’ll be making a recording the event available here a few days after it takes place.

You need to RSVP to receive the meeting invite. The public information sessions will be conducted in English; additional information is available in French upon request by contacting NAV CANADA at the email address below.

General Information Session #1

Date and Time: February 16, 2022, 5:00 p.m. MST

General Information Session #2

Date and Time: March 2, 2022, 7:00 p.m. MST

3. Complete the consultation input form

Your voice matters. To best ensure that we receive feedback in a consistent manner, we invite you to complete the feedback survey formOpen a new window.

We’ll be asking you about your current experience regarding aircraft noise and will be seeking your feedback and any concerns related to the trial. Your feedback will be one of the key inputs of our consultation report, which will be made public following consultation. Note that your personal information will not be included in any reporting and will be presented only as part of aggregate results.