A medical emergency occurred on Air Canada Flight AC7664, which was traveling from Newark Airport. The captain suffered a medical episode during the flight, prompting a diversion to Boston. Details of the incident are limited, but it is known that the flight was redirected due to the captain's condition.

The nature of the medical episode is not specified. For more information on this incident, readers can refer to the full report from ABC13 Houston, which provides further details on the mid-air emergency and the diversion of Air Canada Flight AC7664 to Boston.