Boeing’s international problems continued to mount Wednesday, as more countries and airlines joined the long list of those choosing to ground the company’s 737 Max 8 aircraft.

Canadian carrier Sunwing Airlines announced it would temporarily suspend the use of its four Max 8 planes owing to difficulties in flying over countries that had banned the plane from entering.

“For evolving commercial reasons unrelated to safety including airspace restrictions being imposed by some of our partner destinations, Sunwing Airlines has taken the decision,” the airline said in a statement.

At the same time, Russia’s second largest airline S7 announced it would be grounding two 737s until more information was known about the crash.