A Turkish A321 airliner was hit by an Asiana A330 on 13 May 2018 at Istanbul Airport. It seems a large amount of fluid was released from the damaged section. What is the fluid? There is no APU up there so only hydraulic fluid, am I right?
Some news: https://onemileatatime.boardingarea.com/2018/05/13/turkish-plane-tail-istanbul/