The Scarecrow's Biplane was a Biplane used by The Scarecrow. It was destroyed when it collided with The Joker's Helicopter.
It appears as a boss in Lego Batman: The Videogame in The Joker's Return level 3 where Batman in his Batwing shoots it and it crashes with The Joker's Helicopter but Joker and Scarecrow make it out alive.
In Nintendo DS, The Scarecrow's Bi-plane appears as a boss in Batwing Chase and playable in Villain Mode.