PPRuNe Forums - View Single Post - Final Report: April 2018 737 high speed aborted TO
Old 28th Jan 2021, 16:17
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safetypee
 
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The origins of 'go minded' are from work on the FAA Takeoff Training Safety Aid circa 1992-94 AC120-62. At a similar time the definition of V1 was harmonised world wide; the FAA had to 'add' time for recognition used elsewhere, and redefine with 'first action'.

Some US operators had difficulty with this, resorting to 'procedural' adjustment - calling V1 slowly, or starting 5 kts before the decision speed.
Within this, the hypothetical cases appeared without due consideration of requirement or risk; also the Unions promoted 'Except', more for legal cover than safety or practicality. The result was a legacy of indecision and inaccuracy imposed on the world via FAA and Boeing / Douglas.
In later years Airbus have provided balancing views in a range of safety publications (no 'except' in their drill?)

An ideal procedure is a simple If-Then.
There are a few time-critical events requiring 'automatic' pre-conscious action with little need for situation assessment: 'Pull Up', 'Wind-shear', 'Descend'.
Conversely RTO is one, if not the only time-critical situation which requires situation assessment before acting.
The situations for 'automatic' action are defined by technical systems (EGPWS, TCAS).
RTO situations are defined by 'people', individual perception and assessment, judgement of 'failure', in a time limited period, with inherent bias of human thought.

We construct RTO situations in our head at the particular moment; our interpretation of reality.
How we 'create' these situations is the dominant factor in modern RTOs. Yet increasingly our minds are cluttered with inappropriate knowledge, ill-informed hypothesis and wild supposition from others. The unbalanced fears from extreme situations or outcome, or risk, will resurface from memories biasing our thoughts in those rare and surprising situations where the clarity of If-Then is required.

Dispel hypothesis with fact, validate assumptions, check regulations, and rationally evaluate risk. These with a 'go mindset' will help judge and choose an appropriate action.

No choice is perfect, but it should at least be well considered based on prior understanding and knowledge; then doing what is perceived to be correct, at the time, for 'your' situation, no one can rationally judge otherwise - because they were not there.
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