Originally Posted by
300-600
If you are suggesting that TCAS should be obeyed in every situation (even quiet airspace with an extreme manoeuvre by one a/c whilst the other is close to coffin corner) then you need to read the posts again.
Airmanship comes from looking at the whole picture.100% reliance on automation with flawed logic and lateral capability issues (in the circumstances detailed above) is inappropriate.
Please do not use the 0.1% to discredit the 99,9%.
I do nor want to reopen the ACAS debate in this post, it has been covered so many times in the past here and in the Tech log ( but if you want you can open another thread or PM me to continue discussing this)
Just a remark and an advice : when designing highly automated systems such as the ACAS logic, manual interferences are generally not considered, and therefore not only do those cancel the desired effect but can cause in some cases, in itself an accident.
This is not only valid for ACAS but also for some other airborne components ( ATHR comes to mind, when looking at Toronto to take only a recent example )
After the recent incidents, accidents and collisions caused partially by the current ACAS logic and/or the visual /manual RA non-compliance, the advice given now by all ACAS experts in both side of the Atlantic is ALWAYS follow the RA and never , ever manoeuvre in the opposite sense.
Now, let's stop being too serious and Happy new year to all, and let,s hope that 2007 be safer as 2006 ! ( Although it sarted badly in Indonesia
)