Earthshock - S19-E6
Corrected entry: At the end of this story, Adric dies when he tries to prevent a Cyberman-controlled freighter from crashing into the Planet Earth. He became the first Doctor Who companion to be killed in the series.
Earthshock - S19-E6
Corrected entry: Although the Cybermen view a clip of the second Doctor - taken from "The Wheel in Space" - the Cybermen refer to it as if it is taken from "Tomb of the Cybermen, a completely different Doctor Who/Cybermen story. (00:37:45)
Correction: The Cyberleader says that this is the form of The Doctor that foiled them in "Tomb of the Cybermen." The main point being to show which Doctor, not the actual event. As long as it's the second Doctor, any footage they have will do.
Earthshock - S19-E6
Corrected entry: Why are several Cybermen left behind on the freighter, some of them still dormant? (They're revived by accident, it appears.).
Correction: When the Doctor disabled the bomb the Cybermen were planning to use to devastate Earth, they had to improvise a new plan that involved crashing the freighter into Earth. The freighter's escape pod could only carry the Cyberleader and a few others, and the Cybermen army hidden on the freighter was expendable, hence why they were left behind.
Corrected entry: When Adric and Nyssa go to the library on Monarch's Vessel, the life support system is off. Later when the Doctor is in there the life support system is on.
Correction: Bigon turns the life support on.
Correction: It was Katarina, and Sarah Kingdom, (both from the original, first doctor series) who were the first to die. Katarina, being ejected into space, and Sarah Kingdom being aged to death by the Dalek's time destructor's field.
That's true. It is worth noting that Adric was the first long-term companion to die, as both Katarina and Sara Kingdom were around for less than a full serial. However, serials of that era were pretty long, so they were still around for a decent number of weeks.