Bofredrik
Topic Author
Posts: 1133
Joined: Sat Oct 30, 1999 4:17 pm

Strange Flight With A BA A320...

Sat Nov 25, 2006 3:19 am

When flying with a British Airways A320 did i notice that the a/c on its way from A to B and on 33.000 ft was reducing and increasing speed all the time. Not much but it was like it had difficult to hold a certain speed exact. I have not notice this on any other type of a/c than A319/320/321. Is this some type of "Airbus" thing?
 
BCAL
Posts: 2925
Joined: Mon Jun 28, 2004 10:16 pm

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 4:02 am

Quoting Bofredrik (Thread starter):
Is this some type of "Airbus" thing?

Of course not! The pilots were probably following instructions from ATC to avoid crossing the paths of over flights in the area. On a recent BA flight (a 737) we experienced an unusual climb just like you explained. Some passengers obviously became worried thinking that the plane might be lacking power until the captain made an announcement that the changes we were experiencing were due to heavy traffic and he was constantly forced to climb, slow down, speed up, and climb over other aircraft.
MOL on SRB's latest attack at BA: "It's like a little Chihuahua barking at a dying Labrador. Nobody cares."
 
Tristarsteve
Posts: 3385
Joined: Tue Nov 22, 2005 11:04 pm

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 4:02 am

No its an engine thing. The engines seem to constantly hunt to keep the speed steady.
 
Bofredrik
Topic Author
Posts: 1133
Joined: Sat Oct 30, 1999 4:17 pm

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 6:35 am

Quoting TristarSteve (Reply 2):

Seems logical.
 
Bofredrik
Topic Author
Posts: 1133
Joined: Sat Oct 30, 1999 4:17 pm

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 6:36 am

Quoting BCAL (Reply 1):

It had a steady cruise on 33.000 ft and not any change of altitude.
 
CYatUK
Posts: 388
Joined: Mon Apr 17, 2006 2:21 am

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 7:30 am

Quoting Bofredrik (Reply 4):
It had a steady cruise on 33.000 ft and not any change of altitude.

I may be wrong on this but the aircraft may have been heavy for the given speed and altitude.

The engines increased power to take the aircraft to the selected speed and decreased it so as to keep the speed constant (at the selected atlitute)
However, for some reason or another, the aircraft slowed down which meant that the engines had to increase power again. And the process kept going like this.

Any Airbus pilots out there who can enlighten us?
CY@Uk
 
mhodgson
Posts: 4673
Joined: Mon Dec 30, 2002 8:47 pm

RE: Strange Flight With A BA A320...

Sat Nov 25, 2006 8:08 am

Well if winds are strong, variable and gusty, the airspeed of the aircraft will constantly be changing, and the engines will be changing to accommodate this. If the aircraft is heavy, it will increase the problem.
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