FOLD
http://www.scribd.com/doc/62707861/Safety-First-12
http://www.ukfsc.co.uk/files/Safety%...ust%202010.pdf
http://crew.rj.com/wtouch/training_c...erformance.pdf
Re #34
“Where has the idea that manufacturers performance data is unachieveable come from? It's absolute rubbish to state that an average line pilot cannot achieve book figures”.
The issue is not that the advisory distances are ‘absolutely’ unachievable, but that they are not achieved in operation.
There could be many factors apart from not touching down at the point assumed in the calculation (not 3000 ft or the first third – more often 1000 ft with little or no margin). The crew may not have sufficiently accurate data to use the chosen chart, e.g. wind, braking action; or not operate the aircraft as assumed by the manufacturer.
The FAA has recently issued
SAFO 15 009 which appears to acknowledge some of these issues above.
Also see the amended
AC91-97A.