A320 EXPED Deleted?
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Joined: Feb 2010
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From: xxxx
A320 EXPED Deleted?
As from MSN 5000, EXPED is no longer supplied on new A320 and variants.
This is the case for UL.
It now is an option.
Has anyone seen an A320 w/o EXPED?
This is the case for UL.
It now is an option.
Has anyone seen an A320 w/o EXPED?
Last edited by Kimon; 26th January 2013 at 21:04.
Joined: Feb 2005
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From: Correr es mi destino por no llevar papel
Has anyone seen an A320 w/o EXPED?
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From: W of 30W
Originally Posted by Kimon
Any reason for the deletion?
Did they finally figure out it was unnecessary automation ?
BTW What is exactly the process behind that selection ?
Does it automatically cancel any derated CLB ?
Does it select a lower speed ?
Joined: May 2006
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From: FL510
Is is basically an open descent or climb with greed dot or Vne as the speed target.
And A320ies don't derate climb, at least I have yet to see one which does.
The fact that this button has the opposite effect in A330/340 is something to stumble over if MFF flying both.
As is the target when pulling the speed knob (current speed on A320, current speed target on A330/340).
And A320ies don't derate climb, at least I have yet to see one which does.
The fact that this button has the opposite effect in A330/340 is something to stumble over if MFF flying both.
As is the target when pulling the speed knob (current speed on A320, current speed target on A330/340).
Thread Starter
Joined: Feb 2010
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From: xxxx
Boeing Equivalents: EXPED - ALT - SRS
By Super Tom S.
1) EXPED has no exact Boeing equivalent, as far as I can tell. FLCH is closest but that's the normal open climb/descent mode for Boeing, there isn't a separate climb/descent and expedited climb/descent on Boeings.
2) ALT is ALT
3) PUSH TO LEVEL OFF is is "push the ALT" button on a Boeing...I think ALT does the same thing on Airbus.
4) On Boeing, the SRS function doesn't have a name, it's baked into the control laws. On takeoff, the FMA will display THR | TO/GA | TO/GA...the lateral and vertical modes are TO/GA and perform the same essential function as SRS.
1) EXPED has no exact Boeing equivalent, as far as I can tell. FLCH is closest but that's the normal open climb/descent mode for Boeing, there isn't a separate climb/descent and expedited climb/descent on Boeings.
2) ALT is ALT
3) PUSH TO LEVEL OFF is is "push the ALT" button on a Boeing...I think ALT does the same thing on Airbus.
4) On Boeing, the SRS function doesn't have a name, it's baked into the control laws. On takeoff, the FMA will display THR | TO/GA | TO/GA...the lateral and vertical modes are TO/GA and perform the same essential function as SRS.
Thread Starter
Joined: Feb 2010
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From: xxxx
@ CONF iture
By B.P.
Not having used a derate climb, I can't speak with authority if it will cancel that or not. Otherwise it is basically a speed on elevator selection (like FLCH or OP CLB) but the speed is selected to green dot or VMo (depending on if you are otherwise in open climb or open descent)
I think the pilots wanted the ALT button more than they wanted the EXPED button.
Not having used a derate climb, I can't speak with authority if it will cancel that or not. Otherwise it is basically a speed on elevator selection (like FLCH or OP CLB) but the speed is selected to green dot or VMo (depending on if you are otherwise in open climb or open descent)
I think the pilots wanted the ALT button more than they wanted the EXPED button.
Joined: May 2002
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From: Kiwiland
Confusion
The EXPED (A320) and ALT (A330/340) are in identical positions on all FCU so a MFF pilot could be confused pressing said button, which has opposite result on either fleet. Therefore AB elected to remove instead as part of MFF approvals.
We have both fitted, and both are forbidden in SOP.
We have both fitted, and both are forbidden in SOP.
Joined: Mar 2000
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From: canada
Exped
I'm so happy that it is finally gone. It was a stupid mode that I never used. Then I realized that it did not exist on the 330/340 and hoped they would take it off the 320 which they have now done. Thank you Airbus.
Joined: Feb 2008
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From: 39.000 ft above the Earth
I picked up MSN582x, and it came with the option.
You get what you pay for down in Toulouse - we got some slow old model MCDU's, raised keyboard vs sinked.. (were probably cheaper)!
I rather like it, since the increased G limit allows you to climb at optimum at Greendot in cases where you have steep gradients on SID's without sitting looking at the speed decreasing because the wind changed 2 degrees...
Why not use it.. Is it like those places with BS-cadet friendly SOP's where youre not allowed to use V/S either?
If Airbus didn't want you to use it, they haven't put the button there. We are still pilots (well most of us) And if it really goes haywire and end up in TOGA, it probably had done it too, since the autopilot is 15% slower when you're flying at GD + 5-10 knots.. We had one guy fly into VMO, on autopilot (and they didn't use the EXPED button - but they probably should have though...)
You get what you pay for down in Toulouse - we got some slow old model MCDU's, raised keyboard vs sinked.. (were probably cheaper)!
I rather like it, since the increased G limit allows you to climb at optimum at Greendot in cases where you have steep gradients on SID's without sitting looking at the speed decreasing because the wind changed 2 degrees...
Why not use it.. Is it like those places with BS-cadet friendly SOP's where youre not allowed to use V/S either?
If Airbus didn't want you to use it, they haven't put the button there. We are still pilots (well most of us) And if it really goes haywire and end up in TOGA, it probably had done it too, since the autopilot is 15% slower when you're flying at GD + 5-10 knots.. We had one guy fly into VMO, on autopilot (and they didn't use the EXPED button - but they probably should have though...)
Joined: Oct 2013
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From: Wengen
G-EZFV
Expedite wrongly selected instead of Approach!
Air Accidents Investigation: Airbus A319-111, G-EZFV
Air Accidents Investigation: Airbus A319-111, G-EZFV
Joined: Feb 2008
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From: DSOTM
I like to use it, but I wouldn't use it in DES at all. In CLB It's good to switch back to OP CLB and select the speed you want after the initial deceleration. Letting it reduce to green dot is asking for trouble.
I find it useful at times but honestly we can do without it. It's not prohibited by our SOP's but it is discouraged because inertia or forgetting to look at wind can catch you out. I don't think there is anything particularly wrong with the function itself, but I can understand finger trouble can cause a bunch of headache when toying with this. The above incident had nothing to do with the EXP button as a matter of fact @Winnerhofer. They took off the AP and AT when the wrong selection was made 6 miles away from the field IIRC. As far as I'm concerned that was just a messed up manual approach, which although severe can happen.
Won't be crying if they remove it completely, but it can be good fun on ferry flights.
I find it useful at times but honestly we can do without it. It's not prohibited by our SOP's but it is discouraged because inertia or forgetting to look at wind can catch you out. I don't think there is anything particularly wrong with the function itself, but I can understand finger trouble can cause a bunch of headache when toying with this. The above incident had nothing to do with the EXP button as a matter of fact @Winnerhofer. They took off the AP and AT when the wrong selection was made 6 miles away from the field IIRC. As far as I'm concerned that was just a messed up manual approach, which although severe can happen.
Won't be crying if they remove it completely, but it can be good fun on ferry flights.
