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Old 3rd Aug 2007, 22:57
  #1070 (permalink)  
NigelOnDraft
 
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The corollary must surely be then that TR(s) must not be selected until spoilers are confirmed deployed. (Maybe brakes too.) If selecting reverse removes the option of a go-around, then you need to be sure you will be able to stop first.
I think we must be careful not to overcomplicate things

We all know a "go around" is possible until at / prior a normal touchdown / approach. The performance has been checked, the procedure briefed for every approach etc.

A "touch and go" is very different. If initiated during / after a long float, the performance calcs are already compromised. Once you have touched down, and say Gnd Spoilers deployed, if you now decide to GA, you are "gambling" this is better than "sticking with it". Either solution might be correct, or incorrect, but you are on your own performance wise, and therefore a "pre-planned touch and go" because, say the spoilers seem not to have deployed is an illogical step, until and when all Landing Performance calcs are redefined for this procedure.

IMHO, the time to call a late GA is prior touchdown (e.g. a long float). So long as you push the TLs forward, then even if you touchdown so what? Leaving to "go / no go" decision until after touchdown is rather too late to discuss things in a 2+ man crew. Technically, until Rev is selected, yes, there is a GA option... but with 2 people able to call "GA", and 1 selecting Rev ASAP after touchdown, it is a minefield.

We cannot cover every eventuality, and a performance limiting landing is effectively relying on "everything working". If the brakes / spoliers / reversers (wet) fail then tough - life will get difficult... and the crew will have to take the best decisions according to the circumstances...

NoD
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