Did the plane crash in season six finale of army wives?

You are correct! The season six finale of Army Wives did not feature a plane crash. Die Episode mit dem Titel "Forever und immer" konzentrierte sich auf die Folgen des verheerenden Tornados, der Fort Meade und die Bemühungen der Gemeinschaft, den Wiederaufbau zu erstellen, zu treffen.

It sounds like you might be thinking of a different show or a different season finale. Perhaps you could provide more details about what you're remembering, and we can try to figure out what show or episode you're thinking of!