At 1:15:54 when Ursa helps Kensington to his feet, the artists have drawn the explosive collar back around her neck. This was removed several scenes earlier.
In the air-to-air combat scene over the Atlantic, an aircraft engine will take several moments to lose a significant amount of heat. Turning off the engine while at a higher altitude will cause the temperature to come down, but it would take more than a few seconds to match the temperature of the air around the plane.