Plot hole: When Daniel is in the air with the stolen plane from the Los Alamos air base Nat suddenly appears from behind. However, Nat had no chance to slip into the plane secretely as there was only one stepladder that had been in his mom's full view while she hugged Daniel good-bye. (01:25:30)
Plot hole: One alien egg is shown hanging from the wall at the start of this film, yet there's no way it can be there. The queen didn't take any with her from LV426 in 'Aliens', and if she did, she had no opportunity to place them on the Sulaco between exiting the dropship's landing gear, engaging Ripley and being killed.
Plot hole: At the gas station exploding scene, we see van Damme and the reporter getting in the car and drive off. Just after van Damme and the reporter drive off, we see Lundren get up from the rear seats to try to strangle van Damme. Why would Lundren be there when firstly, they had no idea van Damme took the chip out of his leg, and secondly, after realising they had been set up, they had n idea where van Damme or the reporter would be at that stage. (00:51:54 - 00:52:30)
Suggested correction: He saw the vehicle they drove away from the motel in earlier. Once the building blew up and they knew it was a setup, waiting in their vehicle is a completely logical move. Them not noticing a 6'5 240lb man in the back is a lot more bizarre.