Plot hole: Percy was blamed for being on the coal tipper when it was Arry, Bert, and Henry's fault. None of the three got consequences. Also, why would the workmen tether Percy or even activate the coal tipper when they knew he was an engine?
Thomas the Tank Engine & Friends (1984)
1 plot hole in Middle Engine - chronological order
Starring: Alec Baldwin, Michael Brandon, Ben Small, Martin Sherman, Michael Angelis
Continuity mistake: Despite Henry's issue from "Coal" in Season 1 being resolved after the crash in "The Flying Kipper", also in Season 1, Henry needed special coal again from "Thomas and the Magic Railroad" until Season 16.
Thomas: Wake up lazy bones - do some hard work for a change.
More trivia for Thomas the Tank Engine & Friends
Question: Why was Henry put on a barge instead of being taken to the works?
Answer: He was in the water.