When did Chuggington Season 4 Episode 21 air?
Chuggington Season 4 Episode 21 aired on April 21, 2014.


Koko, Brewster and Wilson are three young, adventurous trainee "chuggers", learning about working on the railway in the town of Chuggington, with the help of the railway controller, Vee, the older engines, and their human friends.
Something goes wrong when the chuggineers are building a bridge.
Direct answers for episode-level questions and details.
Chuggington Season 4 Episode 21 aired on April 21, 2014.
This episode runs for approximately 10 minutes.
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