D'Arnot's plane is a two-seater, but both Bouchart and David Brent are supposed to have been with him in it on the flight when it crashed.
Chapter 7: When Tarzan gets untangled from the tiger trap, he has gashes and blood running, but shortly thereafter, there are no signs of either.
Chapter 3: After the explosion in the cave, D'Arnot has his head bandaged. In the next shot, there is no bandage.
There are fake ears on Tarzan's elephant.
In Chapter: 8, the native signals with a bird call. It's not really him making the sound. It is a recording of an actual Kookaburra bird that are native to Australia. Which would make the signal standout because of the bird not being native to the area.
Chapter:12 title "Operator No. 17", was the original title before the rewrite of this serial and should have been changed.
There are no lions and rhinos in Guatemala.
Chapter 1: Tarzan jumps onto the elephant and almost pulls off one of the fake ears on the animal.
In Chapter: 12, the rescue ship crewman is painting the railing and spots Tarzan's group afloat on a raft. When the Captain looks, his hands are on the freshly painted rail, but there is no sign of any paint on his hands.
In Chapter: 4, when Tarzan and his group get on the ferry, Maj. Francis Martling (Frank Baker) is seen talking to Tarzan, but nothing is heard. Then Tarzan calls him the engineer and asks him a question, but now he is a different actor that plays the engineer. Then the engineer turns away, and Maj. Francis Martling is shown walking away.