http://postimg.org/image/xu1gknyfj/
http://postimg.org/image/clns38jyn/
http://www.news24.com/World/News/Saudi- ... a-20140805
and
http://avherald.com/h?article=47860c1c&opt=0
was taxiing for departure from runway 24 via taxiway C1 and was cleared to line up runway 24 and wait,
when the crew indicated they needed a tug,
tower read back "roger, line up runway 24",
the crew advised having a problem,
tower "roger, hold short runway 24",
the crew again explained they needed a tug,
"roger, line up runway 24 and wait",
the captain now advising "unable!"
explaining they had left the taxiway and needed a tug.