The blast from the exploding jeep flings just one canteen clear of the wreckage, yet when Steve and Kelly are about to get back up, there are two canteens on the desert sand near them.
The bad guys cause the XJ7's engine to stall out, which forces the plane to land without power, and glide in for a landing. Yet, once it's on the ground, it is seen taxiing to it's final parking spot, which isn't possible without engine power.
The third merc at the plane's desert hiding place can be briefly seen running up behind the other two men who get hit by the flying tire, yet he can then be seen running toward Steve from a totally different location that's near the plane instead of out in the open.
The XJ-7 as a jet aircraft would be far faster than a 30+ year old propeller-driven Zero and could easily outrun it, something even a big-haired test pilot would know.
Even if Col. Austin could reassemble the plane in 30 minutes, the Zero would be far out of range by then and it would be impossible to overtake it in the brief amount of time shown even in a faster aircraft.
Steve is supposed to have jammed the hospital room door shut by bending the knob, yet when the staff is trying to wrench the door open for bed-check, the door is shown to be opening a fraction of an inch and then shutting again; obviously someone just purposely pushing the door open slightly and then yanking it shut again.
The military "test" aircraft has a civilian "N" number, N68AJ. Military planes do not use this numbering system.
The Air Force fighters shown at the end were stock footage of F-104 Starfighters, which were retired seven years earlier by the Air Force in 1969.
Near the end when the real zero airplane is shown raising the landing gears while flying, the video is being run in reverse. The plane is clearly flying backwards.
Body double used for Lee Majors when preventing Kelly from falling off the cliff side. The double's hair is gray.
When the plane lands in the desert the sound effect is that of tires on a paved runway.
When the XJ7 is taxiing on the runway after being forced down for the second time, the crew member who is actually piloting the plane for Farrah Fawcett can be seen hunched down in the back seat. His hat, hair, and side of his head are visible for an instant.
As an active-duty Air Force officer, Maj. Wood's hair and fingernails as worn would be non-regulation.
As a military man, Col. Austin would not mindlessly discard weapons that could be used to defend him. It's true that Steve generally doesn't use firearms in his crime-fighting, relying instead on his bionics to defeat the bad guys. But unlike Angus MacGyver, Steve does not have an oft-stated dislike for guns; he occasionally does make use of a gun if one is handy.
Rather than using his correct code-name of "Red Max", actor Dana Elcar mistakenly calls himself "Red Mac" over the radio (this error is an amusing "future-foretelling" coincidence, since he also famously plays MacGyver's likable boss and best friend Peter Thornton in about ten years' time).