I don't like that your Save crashed there Immelmann. Did it crash as the "No mission too difficult" came on, or as soon as you chose the save, or somewhere between or after?... let us know what you find out.
If you can't figure the location, the mission orders would help, if you remember them, because you were just outside the circle for the patrol area, and I can get close to the location with that. I didn't write down a date for the contact when I was watching your videos though... I'll watch 'em again and see if you mention that. I'm assuming you are leaving from Midway though, and after the burning corvette... ??