On a stormy summer day, Air Canada called the Nav Canada flight information center (FIC) at the Quebec Jean-Lesage international airport (CYQB) on the Montreal frequency. The pilot was flying an Airbus and was about to take-off from the Montreal Pierre-Elliott-Trudeau international airport to Halifax, but there was violent weather that had to be avoided.
Normally, big airlines have their own briefing and flight planning services. However, rapidly changing weather sometimes requires last minute adjustments. In the case of the Air Canada flight, severe thunderstorms forbid a direct path from Montreal to Halifax.
The pilot was looking for the best option: go around the thunderstorms by flying north over Mont-Joli then eastward to Halifax or fly southward to United States then head east to Halifax.
Both solutions were possible but the objective was to pick the route that would diminish the pilot’s chances to have to divert to an alternate airport.
Radar imagery became the essential tool to propose a solution. Knowing the time lapse between two images, it was possible to evaluate the weather system’s speed. By calculating what was the distance left for the system to arrive in Halifax, and knowing the system’s speed, the flight service specialist (FSS) was able to estimate as precisely as possible the time when the thunderstorms would move over the destination airport.
The pilot having calculated the estimated time of arrival to Halifax for both the south and north routes, and now knowing at what time the weather system would be over Halifax, he understood that the best option was the southern route through United States. If there was no last minute modification in the system’s speed, he would be able to land in Halifax between twenty and thirty minutes before the first thunderstorm cells arrive over the airport.
It is fairly uncommon to receive an official feedback from the pilot of a big company like Air Canada. But the next day, surprising the flight service specialist (FSS), the pilot called back, presenting himself as the one who had made a flight from Montreal to Halifax the precedent day. He wanted to thank the FSS who had helped him in his decision making since, as he said it, the route via the United States had been a success and he was able to land his Airbus thirty minutes before the arrival of the thunderstorms. That kind of call certainly helps any employee to start a working day on the good foot…!
For more real life stories about being a FSS in Quebec City, click on the following link: Flight service specialist (FSS) in Quebec City