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?

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Some news: https://onemileatatime.boardingarea.com/2018/05/13/turkish-plane-tail-istanbul/

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    $\begingroup$ That's the plane peeing itself after getting hit by the other plane. $\endgroup$
    – Vikki
    Jan 10, 2019 at 0:53

1 Answer 1


It is hydraulic fluid. This works on 3000psi so that would explain the geyser.

I am not familiar with the A320 family but on most aircraft hydraulic system there are usually isolation valves to ensure that part of the system remains serviceable if there is a sudden loss of pressure/fluid in one part of the system.

  • $\begingroup$ I think you are talking about hydraulic fuses and they are normally on the landing gear to retain pressure for the other brakes if a line blows. There wouldn't be anything like that on lines going to the rudder system. $\endgroup$
    – John K
    May 14, 2018 at 12:32
  • $\begingroup$ is that really 20 MPa, i.e., 200 atm? $\endgroup$
    – yo'
    May 15, 2018 at 8:18
  • $\begingroup$ 3000psi for most aircraft. The A380 works with 5000psi. $\endgroup$
    – Anilv
    May 15, 2018 at 10:07

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