When You Comin' Back, Range Rider? (1) - S2-E5
Other mistake: When the van is brought up out of the water, it's easy to tell it's not the real van. The wheels are different, and the side doors are double, rather than a single sliding door. Also, when Crane opens the door and looks inside, you can see the grille of the vehicle because the engine and shroud are missing.
The Only Church in Town - S2-E3
Other mistake: As Hannibal calls to B.A. in the truck, you can see some reflection of the lighting rigs and Hannibal's shadow, even though the sunlight is coming from in front of the truck.
Answer: Several times, Face would pose as a doctor to get Murdock out of the Mental Hospital. How easy would it have been to convince airport officials that he was a doctor taking a sedated patient on board? Or simply tell them, this man is afraid of flying, so he had to be sedated. They could say, "Believe me, you don't want this man to be awake."