Wonder Woman landed the Justice League jet without rotating the wing thrusters to slow the ascent. Later when she takes off, the thrusters are rotated and thrust the jet up, then rotate back. Also, earlier when she walked passed them, the end of the thrusters where they fire, were completely void of any hole or holes the jet fuel propellant would burn out of.
Why is Wonder Woman taking a Justice League jet back to Themyscira when she can fly back herself? She flew to man kind without a jet from Themyscira.