I would do it like this, add a unit in moving zone condition... Set up a trigger zone at the corner of the map about 1000ft diameter. Make your trigger:
Conditions: Unit(PlayerName) in moving zone (PlayerName/1000ftZone/Stennis), Unit Speed less than 30 knots, Unit alive (PlayerName), Flag 6=true
Action: End Game Thingy
This will now fire when your player is within the flight deck area of the Stennis, moving less than 30 knots and the unit is alive (ie, won't fire if you've crashed into the deck and died).