Toronto Lower Don Lands Redevelopment | ?m | ?s | Waterfront Toronto


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Apr 12, 2008
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I searched this thread but was unable to determine if it's been communicated by WT that there is a height limit due to the area being under the YTZ flight path. Has this been confirmed?

Northern Light

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May 20, 2007
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I searched this thread but was unable to determine if it's been communicated by WT that there is a height limit due to the area being under the YTZ flight path. Has this been confirmed?

Presentation from 2017 on flight paths for the airport, current and future:

Vastly more detailed report from Transport Action Ontario from 2014 with some great images:

From the above:



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Feb 26, 2021
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There are two separate sets of airspace controls at play here.

The Airport Zoning Regulation (AZR) protects against intrusions into BBTCA’s Obstacle Limitation Surface (OLS), which is set by Transport Canada’s reg TP312. BBTCA is grandfathered under TP312 v4 (a newer v5 was adopted a few years ago). The AZR’s height restrictions are registered with the Ontario Land Registry and are therefore immutable, but its northern edge happens to line up nicely with Commissioners Street. So the current v4 reg and associated AZR for BBTCA is not a factor for Villiers Island.

The other airspace control has to do with Missed Approach Procedures (regulated by TP 308). This is a much more complex and dynamic set of surfaces for which height restrictions aren’t registered on title. So it has been possible and necessary for PortsToronto and Nav Can to adjust BBTCA’s Missed Approach surfaces from time to time to accommodate new, tall buildings (recognizing there are considerable buffers built into these surfaces).

W. K. Lis

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Dec 24, 2007
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Toronto, ON, CAN, Terra, Sol, Milky Way
How compatible is it to other airports?

8 of the most challenging airport approaches for pilots​

See link.

1. Innsbruck, Austria (INN)​

Situated in a valley surrounded by 9,000-foot mountains, Innsbruck is one of the most challenging airport approaches in Europe. Unlike most airports where traffic can be fed in by ATC from all directions, at Innsbruck, there's only one way in and one way out.

Depending on the wind direction, approaches start at one end of the valley. When the wind is coming from the west, pilots start the approach over the town of Rattenberg at the eastern end of the valley.

2. Mexico City, Mexico (MEX)​

When planning for an approach, pilots identify the threats using "The 6 Ts" -- terrain, thunderstorms, track miles, traffic, tail winds and Air Traffic Control (yeah, the last one is a bit of a fudge!).

Whereas most airports will only have a few of these, Mexico City has them all.

Firstly, the airport is surrounded by some seriously high terrain on all sides, except to the north. This also includes the 17,800-foot active volcano, Popocatépetl. This means that the area in which aircraft can be directed in to land is extremely tight. Whereas most airports will have aircraft lined up with the runway around 12 miles out, at Mexico City, this only happens at five miles.

3. Rio de Janeiro, Brazil (SDU)​

Santos Dumont airport in Rio de Janeiro provides great views on landing for both pilots and passengers -- as enjoyed by TPG U.K.'s Dan Ross.

The area around Rio provides a number of challenges for pilots.

If you've been to Rio or have just seen photos of the city, you'll have noticed that the coastline is quite mountainous. Sugarloaf Mountain blocks a straight in approach to the northerly runways and there are hills up to 7,500 feet high within 30 miles of the airport. As a result, pilots must be acutely aware of their position in relation to the hills at all times, especially when the weather is bad.

4. Gibraltar, U.K. (GIB)​

Situated on the southern tip of Spain, Gibraltar is a British Overseas Territory, which means that it is under the jurisdiction and sovereignty of the United Kingdom. It is just 2.6 square miles in size.

The dominating feature of Gibraltar is "the rock," standing 1,400 feet high. Right next to the rock, on its north side, is Gibraltar International Airport.

Due to the limited space available, the runway is short — just 1,500 meters long. It also starts abruptly by the shore at the eastern end and sticks out into the sea at the western end. To make things even more interesting, the main road that connects Gibraltar to Spain runs across the middle of the runway.

5. Mahe, Seychelles (SEZ)​

One of the most beautiful approaches in good weather becomes one of the most challenging in bad weather.

The terrain of the island of Mahe in the Seychelles is what gives it its beauty. However, it also means that when the wind is blowing from the south, pilots are unable to make a straight in approach.

6. San Francisco, U.S.A. (SFO)​

Another airfield constrained by numerous other nearby airports, SFO is famous for its parallel approaches. Most large airports have pairs of runways facing the same direction. Normally one is used for takeoff and one for landing. At SFO, however, things are done slightly differently.

To maximize the number of aircraft that can land in a space of time, simultaneous parallel approaches are conducted. This means that two aircraft can make an approach, almost side by side, with a distance of just 750 feet between them.

7. Funchal, Madeira (FNC)​

Situated in the Atlantic Ocean, 300 miles of the northwest African coast, Madeira is an autonomous region of Portugal. Known for its popularity with European holidaymakers, it's also famous for its windy conditions making for exciting approaches for landing aircraft.

The airport is situated on the side of the island, and like in the Seychelles, terrain blocks a straight in approach to one end of the runway. Once again, an RNP (AR) approach is available, allowing pilots to safely guide the aircraft past the hills and down to the runway.

8. London City, U.K. (LCY)​

Tucked away in the heart of London's financial district, London City Airport not only has one of the shortest runways in Europe, but also one of the steepest approaches.

Most runway approaches are set at 3 degrees, allowing aircraft to fly gently down to the runway whilst maintaining their approach speed. However, because LCY is located among the skyscrapers of the Docklands, a normal 3 degree approach would bring aircraft too close to the buildings.

To get around this problem, the glide path to both ends of the runway is set at an eye-watering 5.5 degrees. Whilst this keeps the aircraft well separated from any obstacles, it provides a few challenges for pilots.