Go Back  PPRuNe Forums > Flight Deck Forums > Rumours & News
Reload this Page >

Emirates B777 gear collapse @ DXB?

Wikiposts
Search
Rumours & News Reporting Points that may affect our jobs or lives as professional pilots. Also, items that may be of interest to professional pilots.

Emirates B777 gear collapse @ DXB?

Thread Tools
 
Search this Thread
 
Old 20th Sep 2016, 02:58
  #1681 (permalink)  
 
Join Date: Dec 2007
Location: CARIBE
Posts: 51
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 4468
Good post Harry. Much to agree with.

Except:

You only get the config warning whilst on the ground. Once you're airborne, you are no longer 'taking off', and hence don't get the take off config warning.

As a point of interest, because you generally don't have much accelerating to do before reaching the bug and rotating, config warning only occurs for a very few seconds.
No configuration warning between 80 kts and 400 ft
efatnas is offline  
Old 20th Sep 2016, 03:06
  #1682 (permalink)  
 
Join Date: Apr 2008
Location: HK
Posts: 513
Likes: 0
Received 0 Likes on 0 Posts
efatnas

They are not talking about "take off" but an aborted landing!
iceman50 is offline  
Old 20th Sep 2016, 06:29
  #1683 (permalink)  
 
Join Date: Mar 2016
Location: UK
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
There seems to be a lot of confusion here.
You do not go around for a RAAS Long Landing call after touchdown, as per procedure.
Big Enos Burdette is offline  
Old 20th Sep 2016, 06:36
  #1684 (permalink)  
 
Join Date: Sep 1999
Location: South of the Border
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Exactly. It is not mandatory to go around - merely an alert. To continue with landing or go-around is a judgement call. Although not ideal, one can land 4000' down a long runway and be perfectly safe.
gearupmaxpower is offline  
Old 20th Sep 2016, 07:28
  #1685 (permalink)  
 
Join Date: Mar 2002
Location: Seat 1A
Posts: 8,556
Received 75 Likes on 43 Posts
Although not ideal, one can land 4000' down a long runway and be perfectly safe.
Safe from what? What does your Go Around requirements state in your ops manual? Continue a landing after touching down at 4000ft in my outfit and very pointed questions will be asked!
Capn Bloggs is online now  
Old 20th Sep 2016, 09:01
  #1686 (permalink)  
 
Join Date: Oct 2004
Location: York
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
efatnas

You clearly don't spend enough time (correctly) briefing, or practicing this manouvre.

That may well have been our DXB crew's failure too!
4468 is offline  
Old 20th Sep 2016, 10:58
  #1687 (permalink)  
 
Join Date: Jun 2001
Location: UTC +8
Posts: 2,626
Likes: 0
Received 0 Likes on 0 Posts
Although not ideal, one can land 4000' down a long runway and be perfectly safe.
- Safe from what? What does your Go Around requirements state in your ops manual? Continue a landing after touching down at 4000ft in my outfit and very pointed questions will be asked!
My ops manual includes a provision that does not preclude common sense, which is to say that I could, for whatever exigent circumstances, justify landing long, for example, on a 14,500' pavement as on 13R at JFK, or on a 16,000' pavement as on 16R at Denver.
GlueBall is offline  
Old 20th Sep 2016, 11:29
  #1688 (permalink)  
 
Join Date: Nov 1999
Location: UK
Posts: 2,494
Received 104 Likes on 62 Posts
Our Ops manual has this:

The Commander...................shall, in an emergency situation that requires immediate decision and action, take any action he considers necessary under the circumstances. In such cases he may deviate from rules, operational procedures and methods in the interest of safety
Uplinker is offline  
Old 20th Sep 2016, 11:55
  #1689 (permalink)  
 
Join Date: Jan 2004
Location: Here and there
Posts: 3,101
Received 14 Likes on 11 Posts
The Commander...................shall, in an emergency situation that requires immediate decision and action, take any action he considers necessary under the circumstances. In such cases he may deviate from rules, operational procedures and methods in the interest of safety
I'm not sure avoiding a go-around would be seen as an emergency situation.
AerocatS2A is offline  
Old 20th Sep 2016, 11:56
  #1690 (permalink)  
 
Join Date: Mar 2002
Location: Seat 1A
Posts: 8,556
Received 75 Likes on 43 Posts
Originally Posted by 4468
efatnas

You clearly don't spend enough time (correctly) briefing, or practicing this manouvre.
So how many scenarios do you brief for each flight? There are many potentially deadly threats, both "standard" and unique to a particular flight, and it is ridiculous to suggest that we need to brief them all. For example, how do I know that on any particular flight I'm going to do an unplanned touch and go and therefore I should brief it??

Less verbal diarrhoea and more sim training/practice, and more basic IF so when things go crazy, the basics kick in: power + attitude.
Capn Bloggs is online now  
Old 20th Sep 2016, 12:34
  #1691 (permalink)  
 
Join Date: Oct 2004
Location: York
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
Less verbal diarrhoea and more sim training/practice, and more basic IF so when things go crazy, the basics kick in: power + attitude.
I believe we have already established, hundreds of manual approaches wouldn't have helped our colleague fly this particular manouvre. For all we know, he might love flying manually?

I also explained, at the top of this page, why simple "power + attitude" can on occasion be a pretty stupid (because it's less safe!) way of operating a modern jet!

It's familiarity with this particular manouvre that would have allowed him to preserve life. Nothing else.

That means a training program from the operator that is fit for purpose, and regularly refreshing the neural pathways whilst on the line.

As for "verbal diahorrea", perhaps you don't brief anything at all? (Some captains are like that!) I personally have always briefed go-around after landing actions moderately frequently. For 3 reasons:

A) Because I operate to fairly short runways from time to time, so on those occasions it's a favourite briefing point of mine.
B) Because it's a very easy manouvre to get wrong.
C) Because in my advancing years, I am no longer that sharp, and I need all the prior preparation I can get!

Of course, briefing it when it's appropriate does mean that it probably won't have been too long since I briefed it last. So if I get it totally by surprise, I just might stand a chance of getting it right!

Does that help?

Last edited by 4468; 20th Sep 2016 at 12:53.
4468 is offline  
Old 20th Sep 2016, 13:04
  #1692 (permalink)  
 
Join Date: Mar 2002
Location: Seat 1A
Posts: 8,556
Received 75 Likes on 43 Posts
I believe we have already established, hundreds of manual approaches wouldn't have helped our colleague fly this particular manouvre.
In my view, that is nonsense.
Capn Bloggs is online now  
Old 20th Sep 2016, 13:12
  #1693 (permalink)  
 
Join Date: Aug 2014
Location: New Braunfels, TX
Age: 70
Posts: 1,954
Likes: 0
Received 0 Likes on 0 Posts
Exactly. It is not mandatory to go around - merely an alert. To continue with landing or go-around is a judgement call. Although not ideal, one can land 4000' down a long runway and be perfectly safe.
Apparently company SOP was that the pilots abort/reject the landing when getting a RAAS alert. No option. That's the point here. These pilots had apparently been trained/conditioned to be system operators and procedure monkeys. They were neither trained nor permitted to be thinking pilots.
KenV is offline  
Old 20th Sep 2016, 13:29
  #1694 (permalink)  
 
Join Date: Oct 2004
Location: York
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
In my view, that is nonsense
This accident commenced whilst the aircraft was on the ground, and was due to the wrong procedure being used for this particular manouvre. (which is an extremely rare situation.)

Coincidentally, since this FBW a/c is flown with a/t in for manual flight, he selected exactly the same procedure as he would have used during any manual go around!!!

It was the wrong procedure!!

As you say, it's your view that flying more approaches would have prevented him selecting the wrong technique.

It's not my view.
4468 is offline  
Old 20th Sep 2016, 14:03
  #1695 (permalink)  
 
Join Date: May 2008
Location: home
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
4468

Most of what you've said is nonsense. Thrust and attitude even when the A/THR is in IDLE mode will get you out of trouble. Any manual input on the A/THR when they are in IDLE Will DISCONNECT them Genius. But keep going round and round with your Automation BS.
dcbus is offline  
Old 20th Sep 2016, 14:05
  #1696 (permalink)  
 
Join Date: Aug 2014
Location: New Braunfels, TX
Age: 70
Posts: 1,954
Likes: 0
Received 0 Likes on 0 Posts
I'm afraid we will have to disagree.
On a Boeing, simply pushing the thrust levers forward is absolutely NOT always correct, or advisable! (Though it is on an Airbus, that so many seem to decry!)
Try doing that on a coupled approach, with a decision height below 50R and see what happens.
OK, I focussed on the thrust levers cause that was the discussion topic. Lets try this:
I believe pilots should be trained to always manually establish the climb by pulling on the yoke and pushing on the thrust levers while pressing the TOGA switch when doing Go Arounds/Rejected Landings in Boeing products. It does not matter what the autopilot and/or autothrottle mode is, what the protection modes is, what functions are inhibited, or anything else; the result is the same: you go up, away from the ground, and you accelerate. Once it is established the aircraft is climbing and accelerating the pilot can clean up the configuration (raise flaps/gear). Only at that point should he allow the automatics to take over to finesse the climb. Again, this is for Boeing products only. This will not work for Airbus products. (And again, this is not necessarily "bad" and I am not "decrying" anything. This is "different". I'm old school and personally like that Boeing difference because it meshes with my military training. Others may prefer the Airbus difference.) So my point is that if your operation is using Boeing products, I believe you should train your pilots to be old school and fly the airplane like a pilot, and not like a system operator keeping track of modes and inhibition logic for every possible combination of events and scenarios.)
KenV is offline  
Old 20th Sep 2016, 14:19
  #1697 (permalink)  
 
Join Date: Oct 2004
Location: York
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
dcbus

If the thrust levers are In IDLE when you're on approach, you should be going around genius!

Try reading what I write, rather than what you think I write!
4468 is offline  
Old 20th Sep 2016, 14:26
  #1698 (permalink)  
 
Join Date: Jul 2003
Location: An Island Province
Posts: 1,257
Likes: 0
Received 1 Like on 1 Post
KenV, "... cannot conceive of a pilot doing a take off on autothrust .... or go-around ... etc" (#1671)

Disagreements, opinions are influenced by differing abilities to imagine* situations and understand that some 'unimaginable' ones, against all our beliefs and experiences will be encountered. This is a common problem in safety thinking which is influenced by hindsight, outcome bias, or misconceptions about error.

Humans are fallible, we will suffer error, but if we cannot imagine this - that we won't make mistake, whatever the training - then inappropriate conclusions can focus on solutions involving even more knowledge and training - blame.
It is a misguided belief that we can prevent all accidents or that we can foresee every eventuality, however improbable.

In a highly reliable, safe industry, the ability to increase knowledge, ensuring appropriate situational recall, and training, is approaching a limit of effectiveness. This is not to say that we should not continue to teach and train, but that alternative approaches to help human reliability are required.

"Even the best pilots can make the worst mistake," J. Reason.

"It's difficult to change the human condition, but you can change the situation in which s/he works." J. Reason.

* Requisite imagination : the fine art of anticipating what might go wrong.
alf5071h is offline  
Old 20th Sep 2016, 14:26
  #1699 (permalink)  
 
Join Date: May 2008
Location: home
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
4468

Are you seriously a pilot on B777. IDLE on approach? Around 25feet RA is when IDLE engages. And briefing everything under the sun, people really should ignore your NONSENSE.
dcbus is offline  
Old 20th Sep 2016, 14:28
  #1700 (permalink)  
 
Join Date: Jun 2000
Location: last time I looked I was still here.
Posts: 4,507
Likes: 0
Received 0 Likes on 0 Posts
Apparently company SOP was that the pilots abort/reject the landing when getting a RAAS alert. No option.

If that is indeed the case, AND they had not been trained and had recurrency on this, then that is a contributory factor here. It is one thing to write an SOP for an unexpected manoeuvre, but it is incumbent on the training dept to train that SOP, just because it is different to the normal GA.

I believe pilots should be trained to always manually establish the climb by pulling on the yoke and pushing on the thrust levers while pressing the TOGA switch when doing Go Arounds/Rejected Landings in Boeing products.


I would add takeoffs as well, and add thrust a split second before pulling.

It had been said many posts ago that hands on TL's during large thrust changes, and on approach, and a follow through after TOGA is pressed AT ANY TIME, the PF will realise PDQ if the TL's do not give advanced thrust. Select the auto-system but use tactile & visual senses to confirm it is doing what you want it to do.
It seems we have arrived back where we were.
RAT 5 is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.