Also known as: ふらいとエアプレインズ
An Airplane Personification/Mecha Musume project born in the now-defunct "+NIJIURA+" imageboard forum.
The salient design feature was the depiction of the airplanes' Wings as Angel wings.
＋にじうら＋(+NIJIURA+) was a Futaba Channel-like imageboard that existed from 2004 through 2013. Contrary to its name, it had absolutely no connection to the original Nijigen Ura (lit. 2D Flipside) boards on Futaba Channel. It was originally a spin off from the photo image board 101 Freeway forum. A number of endemic OS-tans were born and achieved their unique evolution there. In 2013, repeated server failures and unexpected lapses in domain names resulted in a heavy psychological burden for the +Nijiura+ administrator Boozu, who finally decided to close the board.