PPRuNe Forums - View Single Post - A321 - Useless A/THR or v2500 lag
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Old 7th Feb 2013, 14:59
  #14 (permalink)  
Uplinker
 
Join Date: Nov 1999
Location: UK
Posts: 2,471
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Agree, V2500 A/THR seems lazy. However, the Airbus keeps constant groundspeed on approach (using groundspeed mini), whereas other types keep constant airspeed. So sometimes the Airbus system appears not to be taking enough notice of an airspeed change, or trend, but the groundspeed is usually fine.

I was once told: A/THR keeps speed within 'bug' + or - 5Kts. We pilots tend to want speed at 'bug' + 10, - 0Kts.

I thought the phase advance was very useful. Trouble is, folk would click forward of CLB for much too long and then get into all sorts of trouble. No more than a second then straight back into CLB was all that was ever needed.


U

Last edited by Uplinker; 7th Feb 2013 at 16:05.
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