The teenage prisoner who escaped police custody by slipping off his handcuffs and dashing across a runway while being transferred from Karratha Airport last year has pleaded guilty to a string of charges. Tarkyn Hayes, 19, appeared before Karratha Magistrate’s Court last Wednesday via video link from Casuarina Prison, where the court heard he managed to break free from private security contractors on November 6. Hayes, a convicted burglar and robber, was on the run for about 40 minutes before he was recaptured by police not far from the airport. It is alleged he also assaulted custodial services officer Gregory Wallace during the ordeal and made a threat to do an unlawful act. Hayes pleaded guilty to escaping from custody, trespassing on Commonwealth land, and being armed in a way to cause fear last Wednesday. He also admitted to committing a reckless act that may have endangered the safety of a Commonwealth aerodrome. Hayes denied two charges that he assaulted Mr Wallace and made a threat to do an unlawful act. He is also yet to enter a plea to one charge of damaging property by graffiti. Hayes will appear before the Karratha District Court on March 3 for his trial allocation date.