PPRuNe Forums - View Single Post - A320 descent monitoring questions. (from newbies)
Old 2nd August 2012 | 16:25
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MrHorgy
 
Joined: Jan 2005
Posts: 575
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From: In t'sky
meatlover,

Whilst not rated on the bus, I can offer some general hints that I/we use on the 737 NG..

1) Above FL100 - wind up the speed to increase rate of descent to get back on profile. If you have descent or speed restrictions use in combination with speedbrake to achieved desired result.

2) Below FL100 - Wind speed off to around 220kts and use the speedbrake and flaps to increase rate. On the 737 we are instructed to 'avoid' using flaps as speedbrakes, but as long as your not too fast then sometimes you don't have any of options.

Some people use V/S to finesse exactly what they want in terms of descent management - me included. However, V/S (on the 737 at least) does not offer overspeed protection so it is sometimes frowned on.

If your below the profile you could use V/S to ease off the rate - we could alternatively use VNAV (the equivalent of Managed Path - I think) and it would command 1000ft/min until reacquiring the profile.

Horgy
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