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-   -   AF 447 Thread No. 5 (https://www.pprune.org/tech-log/456874-af-447-thread-no-5-a.html)

Lord Bracken 29th July 2011 15:39

The CVR (assuming, complete) is at the end of the 3rd report published in French now on the BEA.aero site. My French isn't great, but it looks like complete confusion all the way down.

grity 29th July 2011 15:48

2:12:44 C’est pas possible

STICK N RUDDER 29th July 2011 15:50

Pitot tube blocked
 
Anti icing system is not certified for LSD larg supercooled droplets , freezing rain , freezing dreezle. LSD is probably what they encountered.

Blocked pitot tube including moisture drain hole if the AC was put in climb will read high erroneously and if you fixate on IAS and not flying pitch/power the reaction would be NU input and going into stall.

Here is what happened to North West B 727 in 1975

,,Investigators found that the pitot heads had ce damage which caused the crew to receive the wrong readings. The crew, believing the readings where true, raised their nose and pulled back on the control column, which caused the plane to stall,,

,,The aircraft had descended from 24000 feet to 1090 feet in 83 seconds,,

Full NTSB report

http://libraryonline.erau.edu/online...s/AAR75-13.pdf

DozyWannabe 29th July 2011 16:16


Originally Posted by glenbrook (Post 6604458)
OK, this is the real report. It is very clear that PF was confused from the start and disbelieved airspeed. PNF kept telling him to descend, at one point saying "all three say you are climbing so descend";.
At one point PNF says ";we still have engines so whats happening"; presumably referring to the low airspeed.
2:12:27 PNF You're climbing (Stall warning), Descend descend descend descend
PF I was descending then?
PNF, Descend
Captain: No, you're climbing
PF: There I am climbing, ok now descend

...And tellingly, the Captain says :


Originally Posted by AF447 CVR Transcript
2 h 12 min 19 -> 2 h 12 min 45 : Horizon Horizon - Standby Horizon

Shades of Birgenair indeed:


Originally Posted by Birgenair CVR transcript
0346:00 (46:22) CAM-3 *ADI
...
0346:31 (46:53) CAM-3 *ADI*

Admittedly this is from a Google Translate of that particular section of the document, but the question in my mind is the same as in Birgenair - why did the PNF (who appeared to have a better understanding of the situation) not take control earlier?

One question for our Gallic cousins - do I interpret "Tu montes" and "Tu descends descends" as literally climb and descend, or could the PNF be referring to attitude (nose-up/nose-down) here?

[EDIT : Corrected Captain's statement - thanks for the catch! ]

levelvibes 29th July 2011 16:46

Copilot´s training
 
Who can please shed some light on the copilot´s deficient training the BEA report states.

"The copilots had received no high altitude tr aining for the "Unreliable IAS" procedure and manual air craft handling".

I find it hard to believe this. Isn´t this training absolute standard in any simulator training of any serious airline?
Am I missing anything?

Thanks

jcjeant 29th July 2011 16:47

Hi;


One question for our Gallic cousins - do I interpret "Tu montes" and "Tu descends descends" as literally climb and descend, or could the PNF be referring to attitude (nose-up/nose-down) here?
Methink it means
literally climb and descend

GarageYears 29th July 2011 16:58

2 h 11 min 32


je n’ai plus le
contrôle de l’avion là
J’ai plus du tout le
contrôle de l’avion
Google Translate gives me:

"I have no control of the plane there
I am over the whole control of the plane"

I'm pretty sure there is a more accurate translation, but so far the story from the CVR is one of confusion and disbelief at what the instruments were telling them, rather than a systematic approach to understanding the situation and appropriate recovery. I have been through the entire CVR transcript, but since my French is iffy and my clumsy attempts using Google translate (particularly since the document is columnized) are hard to follow, I'll leave it at that.

Lonewolf_50 29th July 2011 17:35


It is very clear that PF was confused from the start and disbelieved airspeed.
What did he see on his attitude indicator?

PNF kept telling him to descend, at one point saying "all three say you are climbing so descend";.
Note: when talking a pilot out of vertigo or scan breakdown, I learned the hard way that an effective technique is to do what I think the Captain was trying to do. The Captain appeared to be trying to get the PF to use his attitude reference, or was pointing out a problem in the attitude.

What I found works is to make recommendations or commands based on the monkey skills required to remedy the siuation.
Examples.

"Lower nose to horizon." "Raise nose to five degrees nose up. Lower nose to three degrees nose down.

Roll right. Stop roll. Wings level.
Left wing is down, roll right. Stop roll.
Add power. reduce power.

What that does is help the other pilot make corrective actions and re-establish his scan. Not sure what others have experienced in this regard.

My aircraft commander once talked me out of a horrific case of the leans doing just that. I used the technique more than once later on in life.

At one point PNF says ";we still have engines so whats happening"; presumably referring to the low airspeed.
2:12:27 PNF You're climbing (Stall warning), Descend descend descend descend
PF I was descending then?
PNF, Descend
Captain: No, you're climbing
PF: There I am climbing, ok now descend
Looks like someone got behind the aircraft. :(

I was descending?
No, you are climbing.
Chills up my spine.

SaturnV 29th July 2011 17:39

The turbulence recorded between 0207 and 0210 was near but did not exceed 0.5G

There are several pages of presentation on the on-board radar, its limitations, etc.


Le radar de bord ne détecte donc pas directement les dangers à éviter et présente certaines limitations qui nécessitent de la part des pilotes une surveillance active et une interprétation permanentes des images présentées pour limiter le risque de sous-estimation du danger de la situation. Il est à noter que, au moment de l’accident, la présence de cristaux de glace à haute altitude n’était pas considérée comme un danger objectif et que les équipages n’y étaient pas sensibilisés.
Just before the captain leaves to go on his rest, there is four minutes (0148 -0152) of turbulence at 0.3-0.4G. Moderate turbulence but nothing to indicate there was any conversation about adjusting the radar. And as the captain takes his leave, no discussion about the weather at all.

BEA comment on an AF A-320 flight that ran into a Cb enroute Geneva.


The top of the cumulonimbus being mainly made up of ice crystals, their detection by the onboard weather radar required an active search with changes to the gain, tilt and range, to be able to detect humid zones. This must be done in sufficient time to allow avoidance. In addition, the rapid formation of these clouds requires frequent repetition of the search. During this flight, the radar [2] was in WX mode, gain on AUTO, the tilt set at -2° and the distance selected on the ND at 160 NM on the Captain’s side and 80 NM on the co-pilot’s side. The Captain expected to encounter storm activity on arrival at Geneva, but not in cruise. The copilot focused his attention on programming the FMGS for the arrival. The crew did not carry out any particular search for storms with the aid of the radar.
Turbulence at the top of cumulonimbus

HarryMann 29th July 2011 17:47


Originally Posted by HarryMann
an well positioned AoA instrument, with green and red areas
Of course you need to have valid airspeed to set the green/red correctly.
Not at the -ve and +ve extremes, as with a revcounter, we have an Orange area

But yes, its not all so simple... but nothing is, What is simple and the Captain could have pointed straight at it.. would be a large simply calibrated AoA instrument -

We are supposed to be cruising at about 3.5 °

So WIHIH
i.e. What in Hell Is Happening, that looks like 15°

infrequentflyer789 29th July 2011 17:49


Originally Posted by GarageYears (Post 6604652)
2 h 11 min 32

Google Translate gives me:

"I have no control of the plane there
I am over the whole control of the plane"

I'm pretty sure there is a more accurate translation, but so far the story from the CVR is one of confusion and disbelief at what the instruments were telling them, rather than a systematic approach to understanding the situation and appropriate recovery. I have been through the entire CVR transcript, but since my French is iffy and my clumsy attempts using Google translate (particularly since the document is columnized) are hard to follow, I'll leave it at that.

- GY

I read it as "I no longer have control of the plane". My french isn't that good either though. Hopefully english translation will be along soon.

I believe they definitely had _some_ pitch info, but what:


Les ailes à plat
l’horizon l’horizon de
secours
- that is capt. at 2.12.19

Shouting for wings flat I think (too late - wings needed to be a lot below flat by then ?). But "l’horizon de secours" - is that the standby (ISIS) ? If so, was PF/PNF seeing something else on main attitude display ?

Mostly, like you say, it looks like complete confusion. No verbal acknowledgement of stall or recovery from. Unless "Im in TOGA eh?" is indicating "I'm in TOGA so can't be stalled can I ?". Previous stall training emphasised TOGA, not nose down, didn't it... :(

Still, at least we got data to look at now.

GarageYears 29th July 2011 17:53

The amplitude of the SS inputs are also pretty disturbing...

Here's the beginning;

2 h 10 min 05 Altitude=35024
The P/A2 disengages.
The roll angle from 0 to 8.4 ° in 2 seconds while the handle is in neutral.
The pitch is 0 degrees.
Cavalry charge (Alarm: disconnection autopilot)
2 h 10 min 06
The flight control law passes from normal to alternate. PF: "I have control"
During the period 2 h 10 min 07-2 h 10 min 18
The SS is positioned:
- To pitch between neutral and ¾ stop
- Left half and then stop right half-stop, 2 times, alternating left until it stops then right to the half-stop (period 4 seconds).
The pitch increases to 11 °.
The vertical acceleration varies between 0.9 g and 1.6 g.
The roll angle is between 11 ° right and 6 left.
The vertical velocity increases up to 5200 ft / min.
So the first SS input at 0.8M/FL350 is 3/4 of the SS travel NU, with an equally significant full-left and then 1/2-right alternating inputs over a period of 4 seconds... pitch started at 0 degrees at 2h10m05 and is 11 degrees at 2h10m18

<snip>

2 h 11 min 32:

OPL is the handle:
- Set to pitch, reached the
stop after 6 seconds and there
remains up to 2 h 12 min 15
etc...

Apologies for the Google Translate.

- GY

grity 29th July 2011 17:53

jcjeant, send you a PM

Lonewolf_50 29th July 2011 17:57

Garage years:

A couple of threads back, either Chris Scott or Confiture posted a link to a small video of a pilot flying a sidestick (in turbulent weather? at low altitude?) that he opined as being in the realm of over controlling. Is what you described in the same ball park, or do you think it's larger control deflections?

If the plane can be in Alt 2 at altitude, and thus need to be hand flown in tha tmode, should not the training syllabus include such tasks and skills be mastered, or at least demonstrated?

bearfoil 29th July 2011 17:57

Lonewolf

I see your quoted exchange differently. Rather than being behind, I see a PF asking for help from someone who (he thinks may) have accurate reads, his being 'duff'.

If so, it is absurd, and calls for an exchange of ss? PF should not even think of asking his question "I was descending then?" If going on feel, he's barking up the wrong tree, and if he is unaware, his question should have been a statement, "your aircraft".

bear

airtren 29th July 2011 18:01


Originally Posted by Lonewolf_50 (Post 6604418)
....


.Tarom, Orly 1994, ..
I doubt that aircraft developed a 10,000 fpm rate of descent. (And good thing, the pilots reacted promptly! :) Overcoming that 10,000 fpm from first unstalling, then getting knots on, then recovering with a nice firm pull without heading toward accelerated stall, since you are not in Normal Law ... how much altitude that takes is a question worth thinking through.

The Tarom guys were with their sticks full ND, during the ascent already, before the Stall, at 60 pitch, as they understood what they need to do, long before the Stall, they just could not stop the ascent. The problem was that the THS was full UP, in spite of elevators full DOWN. They were able to get the A/C back from a 60 degree pitch,....

All was needed was to change the pitch.... take that 10000ft/min descent rate from a NU, to a ND....

Easy to say....

Interestingly, the PF had a Glider Pilot License, since 2001.

Lonewolf_50 29th July 2011 18:02

bear, one way to resolve a pilot who is confused by his displays, in a multi crew aircraft, is to pass the controls to the pilot who isn't. Yes. That is a technique. Would that have helped in this instance? If done early enough, likely so.

Don't know what AF SOP is for such things, nor the corporate culture, nor the norms in its pilot community.

I thus won't comment on what should, or should not have been done, or what is or isn't absurd.

I learned the "helpful copilot" role in CRM and via experience. It sometimes precedes "I have controls" as the order of actions. Depends on the situation.

GarageYears 29th July 2011 18:10

Lonewolf_50:

My take is the reported stick inputs of the magnitude stated are wholly excessive for the altitude/speed, turbulence or otherwise. At the start of the sequence small corrective inputs would have been expected (what I read in the report was entirely different, almost as if the PF was behaving as if they were low and slow).

- GY

Lonewolf_50 29th July 2011 18:14

GY, your comment on "reacted as though he were low and slow" puts the "recency of training" issue back on my screen as a significant training issue among other training issues.

bearfoil 29th July 2011 18:24

lonewolf

With your emphasis on scan (kudos), and your teaching experience, the question asked by PF can mean only a couple things. With a nod to possible translation and linguistic issues, "Was I descending then?"

1. From your PFD, can you tell? (poor technique?)

2. Did you feel a descent? (not the proper time for flight by butt cheek?)

3. A student asking for direction, rather than a PIC?

All are unacceptable?

spagiola 29th July 2011 18:38

A quick, informal translation, that may help some of the non-French speakers here.

I'm a native French speaker and have a PPL, but have no further relevant qualifications, so caveat emptor.

2 h 10 min 06
PF: J’ai les commandes
I have the controls

2 h 10 min
PF: Ignition start
Ignition start

2 h 10 min 11
PNF: Qu’est ce que c’est que ça ?
What's that

2 h 10 min 14
PF: On n’a pas une bonne… On n’a pas une bonne annonce de…
We don't have a good... we don't have a good indication of ...

2 h 10 min 17
PNF: On a perdu les les les vitesses alors… engine thrust A T H R engine lever thrust
We've lost the the the speeds so ... engine thrust A T H R engine lever thrust

2 h 10 min 18
PF: … de vitesse
... of speed

2 h 10 min 22
PNF: Alternate law protections (law/low/lo)
Alternate law protections (law/low/lo)

2 h 10 min 24
PNF: Attends on est en train de perdre…
Wait we're losing...

2 h 10 min 25
PNF: Wing anti-ice
Wing anti-ice

2 h 10 min 27 to 2 h 10 min 31
PNF: Fais attention à ta vitesse Fais attention à ta vitesse
Watch your speed Watch your speed

PF: Okay, okay okay je redescends
ok ok ok I'm going back down

PNF: Tu stabilises
stabilize (could also be, you're stabilizing)

PF: Ouais
Yeaf

PNF: Tu redescends
You're going back down

2 h 10 min 33
PNF: Selon les trois tu montes donc tu redescends
According to the three you're going up, so you go back down

2 h 10 min 35
PF: D’accord
Agreed

2 h 10 min 36
PNF: T’es à ... Redescends
You're at ... go back down

PF: C’est parti on (re)descend
On our way we're going (back) down

2 h 10 min 39 to 2 h 10 min 46
PNF: Je te mets en en A T T
I'm putting you in in A T T

2 h 10 min 42
PF: On est en ouais on est en climb
We're in yeah we're in climb

2 h 10 min 49
PNF: (…) il est où euh ?
Uh, where is he?

2 h 10 min 56
PF: (TOGA)
(TOGA)

2 h 11
PNF: Surtout essaie de toucher le moins possible les commandes en en latéral hein
Above all, try to touch the controls as little as possible in in lateral, huh

2 h 11 min 03
PF: Je suis en TOGA hein
I'm in TOGA, huh

2 h 11 min 06
PNF: (…) il vient ou pas
Is he coming or not

2 h 11 min 21
PF: On a pourtant les moteurs qu’est-ce qui se passe (…) ?
We've got the engines after all. what's going on (...)?

2 h 11 min 32
PF: (…) je n’ai plus le contrôle de l’avion là J’ai plus du tout le contrôle de l’avion
I no longer have control of the plane; I no longer have any control at all of the plane

2 h 11 min 38
PNF: Commande à gauche
Controls to the left

2 h 11 min 41
PF: J’ai l’impression (qu’on a de) la vitesse
I have the impression (that we have) the speed

2 h 11 min 43
CAP: Eh qu’est-ce que vous (faites) ?
Hey what are you doing?

PNF: Qu’est-ce qui se passe ? Je ne sais pas je sais pas ce qui se passe
What's happening? I don't know I don't know what's happening

2 h 11 min 52
Alors tiens prends prends ça
So here take take that

2 h 11 min 58
PF: J’ai un problème c’est que j’ai plus de vario là
I have a problem it's that I no longer have the [vario] there
(not sure that "vario" is, here)

CAP: D’accord
OK

PF: J’ai plus aucune indication
I no longer have any indication

2 h 12 min 04 to 2 h 12 min 07
PF: J’ai l’impression qu’on a une vitesse de fou non qu’est-ce que vous en pensez ?
I have the impression that we have a crazy speed, no, what do you think of it?
(in this context, I believe "vitesse de fou" means "very high speed")

2 h 12 min 07
PNF: Non surtout ne ne (les) sors pas
No, definitely don't don't extend them
(literally, "don't take them out")

2 h 12 min 13
PNF: Qu’est-ce que tu en penses qu’est-ce que tu en penses, qu’est-ce qu’il faut faire ?
What do you think of it what do you think of it what do we have to do?

2 h 12 min 15 to 2 h 12 min 19
CAP: Là je sais pas là ça descends
I don't know we're going down

2 h 12 min 19 to 2 h 12 min 45
PF: Là c’est bon là on serait revenu les ailes à plat, non il veut (pas)
there that's good we'd be back to wings level, no he (doesn't) wan't to

CAP: Les ailes à plat ... l’horizon l’horizon de secours
Wings level ... the horizon the backup horizon

PNF: L’horizon (segonde)
The horizon

2 h 12 min 26
PNF: La vitesse ?
The speed?

2 h 12 min 27
PNF: Tu montes ... Tu descends descends descends descends
You're going up ... you're going down go down go down go down

2 h 12 min 30
PF: Je suis en train de descendre là ?
Am I going down?

PNF: Descends
Go down

2 h 12 min 32
CAP: Non tu montes là
No you're going up, there

2 h 12 min 33
PF: Là je monte okay alors on descend
There I'm going up ok so we're going down (or could be "let's go down")

2 h 12 min 39
PF: Okay on est en TOGA
ok, we're in TOGA

2 h 12 min 42
PF: En alti on a quoi là ?
In alti[tude] we're at what, here?

2 h 12 min 44
CAP: (…) C’est pas possible
It's not possible

2 h 12 min 45
PF: En alti on a quoi ?
In alti[tude] we're at what ?

2 h 12 min 45 to 2 h 13 min 04
PNF: Comment ça en altitude ?
What do you mean in altitude?

PF: Ouais ouais ouais j’descends là non ?
yeah yeah yeah i'm going down here, no?

PNF: Là tu descends oui
You're going down here, yes

CAP: Hé tu ... tu es en… Mets mets les ailes horizontales
hey you ... you're in ... put put the wings level

PNF: Mets les ailes horizontales
Put the wings level

C’est ce que je cherche à faire
That's what I'm trying to do

CAP: Mets les ailes horizontales
Put the wings level

2 h 12 min 59
PF: Je suis à fond à… avec du gauchissement
I'm at the limit ... to the left

CAP: Le palonnier
Rudder pedals

2 h 13 min 25
PF: Qu’est-ce qu’y… comment ça se fait qu’on continue à descendre à fond là?
What is... how come we're continuing to descend so fast?

2 h 13 min 28
PNF: Essaye de trouver ce que tu peux faire avec tes commandes là-haut Les primaires et cetera
Try to see what you can do with your controls up there. The primaries etc

2 h 13 min 32
PF: au niveau cent
At level 100

2 h 13 min 36
PF: Neuf mille pieds
9000 feet

2 h 13 min 38
CAP: Doucement avec le palonnier là
Easy with the rudder

2 h 13 min 39
PNF: Remonte remonte remonte remonte
Climb climb climb climb (literally, "remonte" is "climb back up")

2 h 13 min 40
PF: Mais je suis à fond à cabrer depuis tout à l’heure
But I'm nose up to the limit since earlier

CAP: Non non non ne remonte pas
No no no don't climb back up

PNF: Alors descends
Go down, then

2 h 13 min 45
PNF: Alors donne-moi les commandes à moi les commandes
So give the me controls. The controls to me.

PF: Vas-y tu as les commandes on est en TOGA toujours hein
Go on, you have the controls. We're still in TOGA, ok

2 h 14 min 05
CAP: Attention tu cabres là
Watch it, you're pitching up

PNF: Je cabre ?
I'm pitching up?

PF: Ben il faudrait on est à quatre mille pieds
Well, we should, we're at 4000 feet

2 h 14 min 18
CAP: Allez tire
Go on, pull

PF: Allez on tire on tire on tire on tire
Go on, we're pulling we're pulling we're pulling we're pulling

GarageYears 29th July 2011 18:47

spagolia:

Painful reading..... :ooh:

Thanks for the translation.

jcjeant 29th July 2011 18:49

Hi,

Can someone with technical knowledge put some comment on the graphic from page 111 of the N°3 interim report
Comment about the differences of stick-and surfaces positions (elevators and trim)
Thank you.

Alber Ratman 29th July 2011 18:53

I mentioned the lack of AOA indication a long time ago, seems the experts at the BEA agree.

glad rag 29th July 2011 19:10


I mentioned the lack of AOA indication a long time ago, seems the experts at the BEA agree.
Yes, and I suggested some stand alone examples of the types that could be retrofitted and engineered only to illuminate/indicate when the control laws degraded downwards.......:ouch:

Tragic reading the transcript on post 939, tragic.

rudderrudderrat 29th July 2011 19:14

H jcjeant.


From 02 10 15 the roll input is L & R (-8 to + 8) with little back stick.
From 02 10 45 to 02 11 30 the back stick varies between 0 and -10, at the same time the stab trim runs from -3 to -10.
From 02 11 30 onwards the back stick is held between full back (-30) to about half back but mostly full back; from 02 11 30 to 02 11 45 the stab trim runs to the limit -13 and remains there.

FullWings 29th July 2011 19:24

What's happening? I don't know I don't know what's happening
...
Am I going down?
...
No you're going up, there
...
yeah yeah yeah i'm going down here, no?
...
What is... how come we're continuing to descend so fast?
...
9000 feet
...
Climb climb climb climb
...
But I'm nose up to the limit since earlier
...
Watch it, you're pitching up
...
Well, we should, we're at 4000 feet
....
Go on, we're pulling we're pulling we're pulling we're pulling
...


Horrible, horrible reading. They had most of the clues between them but the committee decision didn't work out. :ouch:

RealQuax 29th July 2011 19:52

Ref #939 2 h 10 min 39 to 2 h 10 min 46
PNF: Je te mets en en A T T
I'm putting you in in A T T

I am putting you in ATT: That doesn't mean he switched the IRS to ATT, does it?

jcjeant 29th July 2011 19:54

Hi,


H jcjeant.


From 02 10 15 the roll input is L & R (-8 to + 8) with little back stick.
From 02 10 45 to 02 11 30 the back stick varies between 0 and -10, at the same time the stab trim runs from -3 to -10.
From 02 11 30 onwards the back stick is held between full back (-30) to about half back but mostly full back; from 02 11 30 to 02 11 45 the stab trim runs to the limit -13 and remains there.
Maybe I'm not enough smart for read a graphic .. :)
But I was requesting advise cause I see differences between the stick position and surfaces position in a corresponding time (discripancies) and I don't think it's can be caused by some hysteresis ...
I read some big movements of the stick .. and not corresponding movement of elevator (at same time)
Why this gap ? (at least is what I see in the graphic)

Lonewolf_50 29th July 2011 20:01

bear, what it means to me is that what he's seeing doesn't make sense. You have instruments doing something unexpected or wrong, a scan breakdown, or both, or multiples of them.

What was he seeing? Apparently, not the same thing the PNF was seeing.

EDIT:

I just read the released (thanks for the translation) trail of discussion, spagiola.

My eyes are wet.

Oh, sweet Jesus. :{

EDIT 2:
Don't understand this

2 h 10 min 39 to 2 h 10 min 46
PNF: Je te mets en en A T T
I'm putting you in in A T T
I think I understand this

2 h 10 min 42
PF: On est en ouais on est en climb
We're in yeah we're in climb

2 h 10 min 49
PNF: (…) il est où euh ?
Uh, where is he?
PNF had already called for the captain.
He seems to have noticed things going pear shaped early, and called for help.

paull 29th July 2011 20:10

Brevet de pilote de planeur obtenu en 2001

So, I guess the "They should make Gliding/PPL/Aerobatics... a requirement" is not the solution, people can still freeze or get it wrong without training/practice.
Such a pity, fear brings with it terrible tunnel vision, compared to the high you get when you get to do what you have trained to do.

I have to believe that the AoA indicator would have made the difference, particularly if it was part of the 'primitive' panel, i.e., these are real, WYSIWYG, no translation, no airspeed indication just a piece of tin that says "this is the way the wind blows" . Sad

takata 29th July 2011 20:13

Hi Alber Ratman,

Originally Posted by Alber Ratman
I mentioned the lack of AOA indication a long time ago, seems the experts at the BEA agree.

Right, but one need to know how to use it. Nonetheless, it should not be so difficult to add them... but most companies don't want (need) them (this documentation below is from 1995).

http://takata1940.free.fr/aoa1.jpg
http://takata1940.free.fr/aoa2.jpg
http://takata1940.free.fr/aoa3.jpg

vanHorck 29th July 2011 20:17

Excellent translation except:

2 h 12 min 15 to 2 h 12 min 19
CAP: Là je sais pas là ça descends
I don't know we're going down

this in my view should be read as 2 separate statements made by the captain

CAP: Là je sais pas
That one I have no idea of

CAP: là ça descends
That one indicates a descent

Further on I keep seeing that the captain is trying to make sense of what are apparently continuously divergent readings.
He seems to be getting it right initially when he points to the emergency artificial horizon indicator but then starts doubting when apparently directed towards other attitude information which is in disagreement with that emergency artificial horizon:


The only stable reading not in dispute is the altitude (9000 feet not disputed), but other attitude readings seem to be in total disagreement

papapapahotel 29th July 2011 20:18

Yes, painful.
It's been enlightening to read this thread, technicaly, and now, humanly.
Thanks to all of you.

Alber Ratman 29th July 2011 20:19

Takata, thanks for the enlighting insight. Most companies might not feel the need for them. Do you believe that the regulators might think overwise now and with the functionallity of raw data if the main ADIRU's fall down?

PS Those instruments would have been showing +25 all the way down.

DozyWannabe 29th July 2011 20:29

Birgenair transcript (English translation) - compare and contrast:

BirgenAir Accident - CVR Transcript

paull 29th July 2011 20:31

Yes, Alber is right, the BEA did a serious job
 
I am reminded that some said that the BEA would never
1-seriously look for
2- Find
3- Read
the recorders, but actually after I put those folk on my ignore list I found the quality of the thread improved:)

DozyWannabe 29th July 2011 20:51


Originally Posted by vanHorck (Post 6605102)
CAP: Là je sais pas
That one I have no idea of

Could be airspeed.


CAP: là ça descends
That one indicates a descent
Could be altimeter.


Further on I keep seeing that the captain is trying to make sense of what are apparently continuously divergent readings.
He seems to be getting it right initially when he points to the emergency artificial horizon indicator but then starts doubting when apparently directed towards other attitude information which is in disagreement with that emergency artificial horizon:

The only stable reading not in dispute is the altitude (9000 feet not disputed), but other attitude readings seem to be in total disagreement
I read it slightly differently - remember he's come in having been woken up from trying to sleep. Unfortunately he never names the instruments he's describing (except when he tries to draw their attention to the horizon and standby horizon). I read it as him seeing them nose-high with TOGA power, trying to work out why the altitude is falling away, and then - sadly too late, he seems to realise, and tells his crew to put the nose down:


Originally Posted by spagiola (Post 6604857)
2 h 13 min 39
PNF: Remonte remonte remonte remonte
Climb climb climb climb (literally, "remonte" is "climb back up")

2 h 13 min 40
PF: Mais je suis à fond à cabrer depuis tout à l’heure
But I'm nose up to the limit since earlier

CAP: Non non non ne remonte pas
No no no don't climb back up

PNF: Alors descends
Go down, then

At this point it's too late to do anything, but it appears that the Captain and PNF are finally aware of what's happened, unfortunately the PF doesn't seem to have been as quick on the uptake (understandably, as he'd been fighting the thing most of the way down) - and bizarrely, the Captain and PNF seem to agree...


2 h 13 min 45
PNF: Alors donne-moi les commandes à moi les commandes
So give the me controls. The controls to me.

PF: Vas-y tu as les commandes on est en TOGA toujours hein
Go on, you have the controls. We're still in TOGA, ok

2 h 14 min 05
CAP: Attention tu cabres là
Watch it, you're pitching up

PNF: Je cabre ?
I'm pitching up?

PF: Ben il faudrait on est à quatre mille pieds
Well, we should, we're at 4000 feet

2 h 14 min 18
CAP: Allez tire
Go on, pull

PF: Allez on tire on tire on tire on tire
Go on, we're pulling we're pulling we're pulling we're pulling
Painful reading.

Lemurian 29th July 2011 20:54

To spagiola
I took the liberty to proof-read your very good translation and this is how it is :



I'm a native French speaker and have a PPL, but have no further relevant qualifications, so caveat emptor.

2 h 10 min 06
PF: J’ai les commandes
I have control

2 h 10 min
PF: Ignition start
Ignition start

2 h 10 min 11
PNF: Qu’est ce que c’est que ça ?
What's that ?

2 h 10 min 14
PF: On n’a pas une bonne… On n’a pas une bonne annonce de…
We don't have a good... we don't have a good indication of ...

2 h 10 min 17
PNF: On a perdu les les les vitesses alors… engine thrust A T H R engine lever thrust
We've lost the the the speeds so ... engine thrust A T H R (off) engine lever thrust

2 h 10 min 18
PF: … de vitesse
... of speed

2 h 10 min 22
PNF: Alternate law protections
Alternate law protections

2 h 10 min 24
PNF: Attends on est en train de perdre…
Wait we're losing...

2 h 10 min 25
PNF: Wing anti-ice
Wing anti-ice

2 h 10 min 27 to 2 h 10 min 31
PNF: Fais attention à ta vitesse Fais attention à ta vitesse
Watch your speed Watch your speed

PF: Okay, okay okay je redescends
ok ok ok I'm going back down

PNF: Tu stabilises
stabilize (“stay there”)

PF: Ouais
Yeah

PNF: Tu redescends
You're going back down

2 h 10 min 33
PNF: Selon les trois tu montes donc tu redescends
According to the three you're going up, so you go back down (meaning the three vertical speed indicators... )

2 h 10 min 35
PF: D’accord
Agreed

2 h 10 min 36
PNF: T’es à ... Redescends
You're at ... go back down !

PF: C’est parti on (re)descend
On our way we're going (back) down

2 h 10 min 39 to 2 h 10 min 46
PNF: Je te mets en en A T T
I'm putting you in in A T T

2 h 10 min 42
PF: On est en ouais on est en climb
We're in yeah we're in climb

2 h 10 min 49
PNF: (…) il est où euh ?
Uh, where is he?

2 h 10 min 56
PF: (TOGA)
(TOGA)

2 h 11
PNF: Surtout essaie de toucher le moins possible les commandes en en latéral hein
Above all, try to touch the controls as little as possible in in lateral, hey ?!

2 h 11 min 03
PF: Je suis en TOGA hein ?
I'm in TOGA, no ?

2 h 11 min 06
PNF: (…) il vient ou pas
Is he coming or not ?

2 h 11 min 21
PF: On a pourtant les moteurs qu’est-ce qui se passe (…) ?
We've got the engines yet (nothing is happening...),. what's going on (...)?

2 h 11 min 32
PF: (…) je n’ai plus le contrôle de l’avion là J’ai plus du tout le contrôle de l’avion
I no longer have control of the plane; I no longer have any control at all of the plane

2 h 11 min 38
PNF: Commande à gauche
Controls to the left

2 h 11 min 41
PF: J’ai l’impression (qu’on a de) la vitesse
I have the impression (that we have) some speed

2 h 11 min 43
CAP: Eh qu’est-ce que vous (faites) ?
Hey what are you doing?

PNF: Qu’est-ce qui se passe ? Je ne sais pas je sais pas ce qui se passe
What's happening? I don't know I don't know what's happening

2 h 11 min 52
Alors tiens prends prends ça
So here take take that

2 h 11 min 58
PF: J’ai un problème c’est que j’ai plus de vario là
I have a problem it's that I no longer have vertical speed
CAP: D’accord
OK

PF: J’ai plus aucune indication
I no longer have any indication

2 h 12 min 04 to 2 h 12 min 07
PF: J’ai l’impression qu’on a une vitesse de fou non qu’est-ce que vous en pensez ?
I have the impression that we have some crazy speed, don’t we ?.. what do you think ?


2 h 12 min 07
PNF: Non surtout ne ne (les) sors pas
No, in any case, don't don't extend them


2 h 12 min 13
PNF: Qu’est-ce que tu en penses qu’est-ce que tu en penses, qu’est-ce qu’il faut faire ?
What do you think ?what do you think ? what do we have to do?

2 h 12 min 15 to 2 h 12 min 19
CAP: Là je sais pas là ça descend
I don't know we're going down

2 h 12 min 19 to 2 h 12 min 45
PF: Là c’est bon là on serait revenu les ailes à plat, non il veut (pas)
there ! that's good ! we'd be back to wings level, no he (doesn't) wan't to

CAP: Les ailes à plat ... l’horizon l’horizon de secours
Wings level ... the horizon the backup horizon

PNF: L’horizon
The horizon

2 h 12 min 26
PNF: La vitesse ?
The speed?

2 h 12 min 27
PNF: Tu montes ... Tu descends descends descends descends
You're going up ... go down go down go down go down

2 h 12 min 30
PF: Je suis en train de descendre là ?
Am I going down?

PNF: Descend !
Go down

2 h 12 min 32
CAP: Non tu montes là
No you're going up, now

2 h 12 min 33
PF: Là je monte okay alors on descend
There I'm going up ok so let's go down

2 h 12 min 39
PF: Okay on est en TOGA
ok, we're in TOGA

2 h 12 min 42
PF: En alti on a quoi là ?
In alti[tude] we're at what, here?

2 h 12 min 44
CAP: (…) C’est pas possible
It's not possible

2 h 12 min 45
PF: En alti on a quoi ?
In alti[tude] we're at what ?

2 h 12 min 45 to 2 h 13 min 04
PNF: Comment ça en altitude ?
What do you mean in altitude?

PF: Ouais ouais ouais j’descends là non ?
yeah yeah yeah i'm going down now, no?

PNF: Là tu descends oui
You're going down now, yes

CAP: Hé tu ... tu es en… Mets mets les ailes horizontales
hey you ... you're in ... put put the wings level

PNF: Mets les ailes horizontales
Put the wings level

C’est ce que je cherche à faire
That's what I'm trying to do

CAP: Mets les ailes horizontales
Put the wings level

2 h 12 min 59
PF: Je suis à fond à… avec du gauchissement
I'm at the limit of the stick... to the left

CAP: Le palonnier
Rudder pedals

2 h 13 min 25
PF: Qu’est-ce qu’y… comment ça se fait qu’on continue à descendre à fond là?
What is... how come we're continuing to descend so fast?

2 h 13 min 28
PNF: Essaye de trouver ce que tu peux faire avec tes commandes là-haut Les primaires et cetera
Try to see what you can do with your controls up there. The primaries etc

2 h 13 min 32
PF: au niveau cent
At level 100

2 h 13 min 36
PF: Neuf mille pieds
9000 feet

2 h 13 min 38
CAP: Doucement avec le palonnier là
Easy with the rudder

2 h 13 min 39
PNF: Remonte remonte remonte remonte
Climb climb climb climb (literally, "remonte" is "climb back up")

2 h 13 min 40
PF: Mais je suis à fond à cabrer depuis tout à l’heure
But I've been pulling to the back stop for a good while

CAP: Non non non ne remonte pas
No no no don't climb back up

PNF: Alors descend
Go down, then

2 h 13 min 45
PNF: Alors donne-moi les commandes à moi les commandes
So give the me controls. I have control

PF: Vas-y tu as les commandes on est en TOGA toujours hein
Go on, you have control. We're still in TOGA, right ?

2 h 14 min 05
CAP: Attention tu cabres là
Watch it, you're pitching up

PNF: Je cabre ?
I'm pitching up?

PF: Ben il faudrait on est à quatre mille pieds
Well, we should, we're at 4000 feet

2 h 14 min 18
CAP: Allez tire
Go on, pull

PF: Allez on tire on tire on tire on tire
Go on, we're pulling we're pulling we're pulling we're pulling !


For some reason, I lost the colors but you've cited the speakers.

takata 29th July 2011 21:02

Hi Lonewolf,

Originally Posted by Lonewolf 50
2 h 10 min 49
PNF: (…) il est où euh ?
Uh, where is he?

PNF had already called for the captain.
He seems to have noticed things going pear shaped early, and called for help.

Be carefull (everybody) about the transcript meaning. It is better to wait for the English translation which will be painful to do (I guess it is the reason why they are late on it).
French talk (especially in high stress context) is using a lot of undefined terms; here, "il est où" could mean "where it is?" or "where he is?". In context, I understand that something is missing on his pannel (like Flight Director, or another indication he was looking at that disapeared) rather than "someone" -the captain.
A lot of these sentences are completely meaningless without the tone -might be interrogative, or talking to one or to the other or to himself or even to the aircraft.
Following the conversation with notes about the context in other columns add a lot to the understanding.

Now, I understand also why the BEA would like to have the whole scene with all pannels filmed as many things said all along are related to instruments and very hard to guess what it was exactly.
Vario = variomètre = V/S indicator. The PF lost it at one point.

It is a work in progress. Much more will be added but we'll have to wait for the first quarter of 2012, when they will finish their job.


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