Whats that Avatar the last airbender episode called??!

ok, i saw this clip, and it shows Aang Appa and the crew sinking in the water!.!. then!.!.!. Aang turns into the Avatar state and gets on Appa and saves them!.!.!. whats it called!?!? its not where Aang gets a vision of him sinking 100 years ago!.!. its with the crew and everything!.!.!.Www@Enter-QA@Com

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