It has long been established that pilot fatigue can present a risk to flight safety-a risk that needs to be managed at company, national and European level (see also  Proof that Fatigue Kills  - PDF). Safety experts reckon that pilot fatigue contributes to 15-20% of fatal aviation accidents caused by human error.or 10-12 hours of duty time the proportion of accident pilots with this length of duty period is 1.7 times as large as for all pilots. For pilots with 13 or more hours of duty, the proportion of accident pilot duty periods is over five and a half times as high.
kgb answers Â» Sports Â» What is the london bridge sex position? With the London bridge, the woman is facing upward, using all four limbs to hold her body weight off the bed! Tags: london bridge, limb, sex positions, body weight Thursday, February 02 2012
London Bridge is falling down, Falling down, falling down. London Bridge is falling down, My fair lady. We suppose it's pretty messed up to write an ode to shoddy civil engineering, but really, how bad could this be? Aside from all those suicides, nothing sinister ever happens on bridges! What It Actually Means: It's a song about starving children to death. There have been a lot of theories over the years as to what the collapse of the London Bridge in the song means. Some believe that it refers to Viking attacks back in the 11th century. As no documented records of such an attack on the bridge exist, however, we'll instead focus on a different interpretation: immurement. Don't know the term?