EgyptAir Flight MS804 Vanishes With 66 on Board

An Airbus A320 traveling from Paris to Cairo with 59 passengers and 10 crew disappeared from radar after entering Egyptian airspace. The flight took off from Paris at 11:09 PM CET and was at 37,000 feet when it vanished. A search and rescue operation is underway. Egypt Air has released statements and updates via tweets, promising more information as it becomes available.

What was the origin and destination of the missing flight?

How many passengers and crew were on board the missing flight?

At what altitude was the Airbus A320 traveling when it disappeared?

What time did the flight take off from Paris?

What actions have been taken regarding the search for the missing flight?