The world's longest zip-line as of 31 January 2018 is the 'Jebel Jais Flight' from one of the peaks of the Jebel Jais mountain in Ras Al Khaimah, United Arab Emirates, with a single unbroken span of 2,831.88 m (9,290 ft 11 in). However, the ride has been closed pending the outcome into an investigation into the crash of an Agusta 139 rescue helicopter on 29 December 2018, killing all on board, thought to have clipped one of the cables.