PPRuNe Forums - View Single Post - The over use of autobrakes
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Old 13th Feb 2018, 09:42
  #26 (permalink)  
PEI_3721
 
Join Date: Mar 2006
Location: England
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Pprune is a window on people and human performance.
Posters have expressed their views on aircraft systems; many contributions appear to reflect the overrun accident statistics.
What we say or what we write in forums represents what we think, and often those thoughts which affect behaviour in everyday operation. (And beware of covert influence of other’s views on our thoughts).

There have been many discussion about automation. Autobrake is automation, this appears to be more acceptable than that for flight control, but there are similar problems such as lack of feed-back; lack of feel between applied brake effort (feet on pedals) and deceleration. So why no calls for more manual braking practice?
Also, using autobrake with thrust reverser we lose the ability to differentiate between brake based retardation and that of reverse, where the former relates to surface conditions, and the latter effectiveness reduces with reducing speed.
Thus whilst automation offers advantages, it must be appreciated that some operating features required ‘piloting’ compensation.

The skills required are those of judgement - choice of safest option - which requires good knowledge of aircraft systems and the environment, but unless we seek knowledge and practice, these skills might not improve.
Part of this judgement is to realise that future action is uncertain - “no one size fits all”, thus the task is to manage uncertainty.
What might be deduced from this thread, even when allowing for the non-professional input, is that the level of uncertainty in aviation appears to be increasing.
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