"Dingo dango" is a phrase, when spoken over an aviation channel, is allowed to be uttered by only flight instructors to other flight instructors. The meaning is similar to saying "ok, sounds good!"
Air to air conversation between flight instructors:
Direct translation: The big dumpling family. It is in the anime Clannad and Clannad ~After Story~ They are a big dumpling family and there are 100 members. They are round and cute with two eyes and no mouth or nose. It is never boring with them. They seem like so much fun to join! They are simply the best and cutest thing ever made! They even have their own theme song!! Dango, Dango, Dango, Dango, Dango Daikazoku~ ^^