Published: 3:24 PM 9/6/2015
Ryanair flight had to take emergency evasive action...
By Nick Gutteridge
In the footage a black object can be seen hurtling through the sky.
Footage taken on board the Boeing 737 appears to show a small black object shooting inches past the plane's wing at high speed, leaving a trail of dark smoke in its wake.
The passenger who filmed the supposed close encounter said the pilot had to bank sharply to avoid the unidentified craft, which was described as "hostile."
The clip, said to have been shot aboard a Ryanair flight from Holland to Spain, was uploaded to YouTube.
It was published by the Lions Ground UFO group, whose member Heathcliff said: "A Dutch passenger captured UFO on video while on board the Ryanair airbus Netherlands (Eindhoven), heading to Spain.
"Coincidentally, the passenger was recording because she enjoyed the view. After four minutes the recording of this UFO event happened.
"The engines made a lot of noise and the pilot made suddenly a sharp manoeuvre. The UFO endangered the aircraft. A lot of panic was on that plane."
The conspiracy theorist claimed that the UFO was "hostile" and that it forced the plane to take evasive manoeuvres.
He also rubbished speculation that the object may have been a bird, saying it was travelling too fast.
The clip has been viewed more than 100,000 times since being uploaded Tuesday. (Sept. 1, 2015)