Factual error: Near the end of the film Knox is flying a Huey helicopter and the Angels hitch a ride by shooting it with a spear gun and dangling on the line behind it. Suddenly adding about 200kgs to a Huey in flight like that is going to cause all sorts of problems with the trim and airspeed of the aircraft - the pilot would know immediately that something was wrong. (01:23:20)
Revealing mistake: When the Angels are fighting the "Creepy Thin Man," right before Drew Barrymore lifts up Lucy Liu to spin her around and kick the thin man, to get Lucy's attention, Drew hollers out "Lucy!" even though Lucy Liu's character's name is "Alex." (00:26:20 - 00:27:25)
Revealing mistake: The caravan is shot-up with machine guns - so why are the bullet holes (the metal of the caravan's walls) bending outwards? (00:50:45)
Continuity mistake: Just after the explosion at the Angels' headquarters, Drew has soot all over her face, but in the final shot of her she's clean. Her hair's a lot neater too. (00:59:20)
Deliberate mistake: When the girls all order their food at the drive through they get their food but never pay. (00:17:15)
Continuity mistake: When Lucy Liu is climbing a rope up the walls of the bad guy's castle lair, you can clearly see that she is wearing shoes without heels. But later on when she's fighting various bad guys, she's wearing four-inch heels. (01:13:50)
Plot hole: In the Redstar mainframe, we are told that the floor of the vault will trigger the alarm if it receives more than 0.25 seconds of contact (apparently even with the security checks). What would be the point of the bosses going through all of those security measures if they would just set the alarm off anyway? Surely once the girls have faked the fingerprint and retina scans, they don't then need to flip across the floor! (00:33:55)
Continuity mistake: During the helicopter scene at the end, the rope as well as the clamps they used to pull themselves up on suddenly disappear from underneath it. It's visible in most of the close-ups underneath the helicopter, but missing in others. (01:20:35)
Factual error: In the opening scene with the terrorist on the aeroplane, the LL Cool J character opens the hatch to the cabin and jumps out with the mad bomber. Pretty amazing considering aircraft doors open inward, requiring about two tons of force to overcome the air pressure exerted from inside the cabin. (00:03:05)
Continuity mistake: In the first pursuit of the Creepy Thin Man, at the party, the girls are running down the stairs while they change and begin to litter the stairwell with clothes. There's one wig dropped that's dark brown/black and straight. Though Lucy's hair at the party does appear shorter than her actual hair length, her hair is curled up at the ends, not straight like the dropped wig. So whose was it? (00:23:05)
Continuity mistake: When Cameron Diaz is racing down with F-1, one of the cars flips and crashes. Notice that it's very obvious there's no-one in any of the cars, even though they're supposedly driving along the street, at traffic lights, etc. (00:31:50)
Continuity mistake: When Natalie is in the room preparing to enter the chamber to install the device on RedStar's system, she is wearing a white outfit from head to toe with a small oxygen mouthpiece for breathing. However, when the door opens to the room and she begins her gymnastic flips over to the system, the outfit no longer covers her hair and the oxygen mouthpiece is gone. There doesn't appear to be a hood attached to the outfit. (00:39:50)
Factual error: The airplane they jump out of at the beginning would be travelling at cruising altitude where it is roughly -30 outside with a wind chill of -30 and -10 for travelling at terminal velocity. They do so without using the Extreme Cold Weather clothing that parachutists must use at this height due to the fact that any exposed skin would be frostbitten within seconds. Also they have no means of breathing the amount of oxygen that a human needs as they are too high up to get an adequate supply.
Revealing mistake: When Drew is shot through the window, supposedly naked under the towel, you can see underwear when the shot is from below looking up, before she falls. As she falls down the hill, look closely and you can see the skin-tone suit she wears. (00:57:50)
Continuity mistake: In the scene where the Angels are fighting on top of the tower, Lucy Liu and Crispin Glover do a spinning move. There is a close up on Lucy before she does the move and then in the next shot we see her and Crispin spinning out of the way. In the close up shot, we see her starting to spin to her right, but in the wide shot she's spinning to her left. (01:15:25)
Visible crew/equipment: Right after the race car goes over the bridge the scene changes to the Angels' HQ & there is a close-up of the TV screen that they are watching. As the camera zooms out you can very clearly see the reflection in the TV of the cameraman backing away from the screen with his eye to camera. (00:33:00)
Revealing mistake: When the Angels are picking through the wreckage of their headquarters, look at the only remaining wall - it's the thinnest wall you'll ever see. (01:02:20)
Other mistake: At one stage the Angels speak with each other in a different language, so that the people sitting next to them wouldn't understand. Having listened to it for a few times, I realized it was Finnish. Funny though, the thing they actually said there (in Finnish), was totally different than the written translation. (00:41:45)
Plot hole: When the girls found Knox in the room, they had to break down the door because it was bolted from inside. Now wouldn't that be suspicious? He's in a room where the only way out is through a door that was bolted from the inside... (00:26:20)
Continuity mistake: When the girls figure out that Knox is after Charlie, and Dylan thinks of the picture and they zoom in onto "Townsend." The shot before the final shot of the photograph shows Knox's father's arm around Charlie, when in all the other shots, he has his arms above his head. (01:00:05)
Suggested correction: Knox wasn't a trained pilot. Either he had no clue to what was going on, or he thought something may have been wrong, but didn't know what to do about it.
Taking off and landing a helicopter are by far the most intense and difficult part of a pilot's training. Seriously, 99% of learning to fly is learning how to land and take off. If the pilot is skilled enough to take off in a Huey he is easily skilled enough to notice a massive additional drag on his helicopter due to the additional weight of the angels and the air resistance put up by such a bulky protrusion on his aircraft. If he isn't skilled enough to notice that, he isn't skilled enough to take off in the first place.