Assault Vehicle Passengers disembarking from Access Points on a vehicle with this special rule can charge on the turn they do so (even in a turn that the vehicle was destroyed, or in the following turn) unless the vehicle arrived from Reserve that turn.
Deep Strike Deep Strike Mishap Table: D6 Roll
1: Terrible Accident! - The entire unit is destroyed!
2-3: Misplaced - Your opponent may deploy the unit anywhere on the table (excluding impassable terrain, but including difficult terrain, which of course counts as dangerous for Deep Striking units), in a valid Deep Strike formation, without rolling for scatter. Units embarked on a misplaced Transport can disembark during their Movement phase as normal.
4-6: Delayed - The unit is placed in Ongoing Reserves.