ER (1994)

Missing (a.k.a. Mistaken Identity, a.k.a. Identity Crisis) - S10-E9

Factual error: The kid from the car accident has had an orthopedic device called a halo put onto his head in order to immobilize his head and injured spine. This item is screwed directly into the skull and is very secure. However, when the doctors are giving the boy CPR, the halo stays stationary but the child's head moves back and forth inside of it. The halo should have kept his head still, or his head would have moved only if the halo moved.

Forgive and Forget - S10-E16

Factual error: When the psychotic vet steals an M-60 series tank and drives through Chicago to the hospital, there are several problems with the tank actions. If the vet had combat locked the hatches, the police would not have been able to open the loaders hatch to shoot him, but if it had not been locked, all the bouncing around as he rolled over cars would have bounced it open to lock in the open position. If it had been open and not locked open, it would have been visibly open (8-10 inches) but it was not during all the views on the way to the hospital. During the trip to the hospital, the main gun is in the travel lock over the rear deck, the travel lock cannot be released from inside the vehicle, and if he had ever stopped and gotten out to release it, the police would have shot him, and yet when he gets to the hospital, he can traverse the turret. And while we are talking about the turret traversing, that cannot be done from the drivers compartment, it must be done from either the commander's position or the gunner's position. When the police open the loaders hatch, they shoot straight down into the driver's compartment in the hull, but the vet would have had to be in the right side of the turret, in either the TC or Gunner seat to be traversing the turret.