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View Full Version : QF72 incident may ground the A330-300


FlyBoy737800
8th Nov 2009, 00:03
My fellow PPRuNe colleagues - you may remember on October 7 incident, on Qantas flight QF72 from Singapore to Perth, last year, passengers were hurled around the cabin after the Airbus A330 aircraft dropped with two plunges of 20 and 16 seconds 200 and 650 metres in a matter of seconds while flying over the Indian Ocean. The pilot was forced to make an emergency landing at Learmonth, 1200 kilometres north of Perth on the Western Australian coast, and 44 passengers required hospital treatment.

The Australian Transport Safety Bureau said it believed a faulty component, called the air data inertial reference unit (ADIRU), caused the problem by feeding "erroneous and spike values'' about the angle at which the plane was flying to a flight control computer.

"This led to several consequences, including false stall and over speed warnings,'' and later generated very high and incorrect values for the aircraft's angle of attack. This led to the flight control computers commanding the aircraft to pitch down.

On this flight the plane acted of its own accord even after the pilot had taken manual control of the aircraft but minutes later, the plane made two downward plunges.

This was a situation which nobody have seen it before.
During the incident the flight crew should get a message from ECAM (Electronic Centralized Aircraft Monitor) signaling the pilots which system is faulty and what to do to fix it.

The thing to remember about Airbus is the flight control computer is always flying the plane wether Auto pilot is on or not, even in manual mode all the controlling done through the flight control computer.
After the initial problem that led to the autopilot disconnecting, they were hand-flying the plane and then the aircraft pitched down by itself.
While they try to correct the situation it happened again ... it pitched down a second time.

After the incident they found one of the three Air Data Inertial Reference Unit (ADIRU) was defective and it sent to the US base of its manufacturer, Northrop Grumman for to find out what led to the (fault) and reduce the chance of that happening in the future.

As far as it is known , this appears to be a unique event and Airbus has admitted that it is not aware of any similar event over the many years of operation of these type airplanes.

Qantas’s initial review of the aircraft's maintenance history found no problems.. A Qantas spokeswoman said 21 of the company's 217 aircraft were equipped with the component in question. "This is now clearly a manufacturer's issue and we will comply with the manufacturer's advice," she said. Airbus issued a bulletin to all operators of its planes containing the component, with advice on how to reduce the risk of a crash in the event of such a malfunction.The aim of the bulletin is to:update operators on the factors identified to date that led to the accident involving QF72,provide operational recommendations to mitigate risk in the event of a reoccurrence of the situation which occurred on QF72. In order to "minimize risk in the unlikely event of a similar occurrence" … an Operational Engineering Bulletin is on its way … Is it simply to emphasize the already published procedure or is it something new the QF72 crew could not have known before ?

Importance of reading the ECAM messages and manipulating the appropriate switches is shown once again in this incident.
The A330 and A340 have identical systems, in the world there are 182 A-340 and 210 A-330 airplanes are flying.

There had been suggestions the incident may lead to the grounding of this beleaguered aircraft.

What do you think ?

Di_Vosh
8th Nov 2009, 00:08
What do you think ?

I Think that you're a troll who has no credibility on these threads...

Cheers mate,

DIVOSH!

flynerd
8th Nov 2009, 00:18
Nope. No grounding because of that incident, but on-going analysis of systems involved - as is normal.

11Fan
8th Nov 2009, 00:22
Jeez, get a hobby. One that doesn't involve posting some negative personal opinions about the A330 every couple of weeks. :rolleyes:

gobbledock
8th Nov 2009, 00:25
I think I smell a reporter sniffing around looking to create another shite story about QF. Or in the very least I smell a trouble maker looking to raise some more negative controversy about the Red Rat. Lame !

gravity enemy
8th Nov 2009, 01:38
Yesterday a 757 made an emergency diversion to JFK after smoke entered the cabin. The very night before an Embraer (145 I think), made an emergency landing in Newark for very similar reasons. An A320 had a gear malfunction a few years ago and had to make an emergency landing in LAX. Later it was found quite a few A320's were found with similar problems. In a very famous incident at Heathrow, a B777 plunged shy of the threshold. The A340 has been in a few landing incidents. The A310 and B737 have had a fair share of rudder problems. The list of aviation incidents goes on and on and extends through to every single aircraft ever made.

Now why do we not assume that ALL these airplanes are 'beleaguered?' And as for your beleaguered,....oops I mean beloved 737, we could start a whole thread on 'interesting' past experiences. Having said that however, it still cannot be said that the 737 is an unsafe aircraft. In fact there really isn't a single modern airliner flying today which is considered unsafe.

I don't know why you still carry on presenting yourself as a pilot. It's really quite sad, especially since there is a wannabe section. However reading your poorly written post I am not quite sure that you are a media troll either. That is unless you work for one of the less well edited publications, which would explain where you have read all this publicity-stunt type information, which looses instant credibility with any plot reading it. You certainly aren't fooling anyone here so stop bull:mad:ing yourself.

Capt Fathom
8th Nov 2009, 01:51
All previous posts (http://www.pprune.org/search.php?searchid=5942164) by flyboy737800 involve Airbus fishing!

PS... still no response from flyboy to this question posed during a previous fishing expedition! :E

what the ACN is for the B737-800 and its relationship to PCN

Bo777
8th Nov 2009, 01:52
Don't feed the troll!

zube
8th Nov 2009, 04:18
"beleaguered" sounds like cliche school for journos, Lesson 1.

Buster Hyman
8th Nov 2009, 04:44
Okay, who forgot to tell me that the School Holidays had started? :=

wateroff
8th Nov 2009, 04:52
Your post idicates you know less about the Airbus than you imply.

DirectAnywhere
8th Nov 2009, 04:57
What do you think ?

I think this thread should be locked pronto.

FlyBoy737800
8th Nov 2009, 06:14
The question was -

"There had been suggestions the incident may lead to the grounding of this beleaguered aircraft. What do you think ? "

Gentlemen and Ladies - please confine your post to the subject and refrain from descending to personal attacks.

Flyboy737800

7378FE
8th Nov 2009, 06:18
Nowt wrong with A330, great airplane to fly on as a SLF.

FLYBOY737800 PM me the name of your supplier. :ok:

Pinky the pilot
8th Nov 2009, 06:28
Gentlemen and Ladies - please confine your post to the subject and not descending to personal attacks.

Nice try mate, but you've been sussed out fairly well I would say. My bet is that you're a journo.:ugh:

Quit now whilst the decision to do so is still yours.

negative LAHSO
8th Nov 2009, 06:56
"My fellow PPRuNe colleagues" FlyBoy737800


I'm not your colleague because I'm not a journo so :mad:off!

smiling monkey
8th Nov 2009, 07:15
"There had been suggestions the incident may lead to the grounding of this beleaguered aircraft. What do you think ? "

Suggestions by who? State your source mate, or are you just making this up?

paulg
8th Nov 2009, 07:17
This one is for you Flyboy.
Translated from an old Norse Poem. (courtesy of Wikepedia)

Ode to a Troll?

They call me Troll;

Gnawer of the Moon,

Giant of the Gale-blasts,

Curse of the rain-hall,

Companion of the Sibyl,

Nightroaming hag,

Swallower of the loaf of heaven.

What is a Troll but that?

gobbledock
8th Nov 2009, 07:34
The post by Pinky the pilot pretty much sums up the general consensus about what most poster's feel about flyboy's comment.
However, there may be just a remote chance that flyboy does fly the big jets, on Microsoft. So i think two suggestions are in order here.
1) If you are a wannabe, go back to your computer flyboy and leave the aircraft related discussions to the experts.
2) If you are a Reporter ( which is the most likely scenario due to the style of slimy attempt at trying to extract input from the professionals) please go back to your Trailer and use Google to dig up your next shite lined story. Journo's who muck rake aren't welcome on Prune.
Lastly, I may be completely wrong altogether, so if you can prove that you aren't a low-life Journo then I humbly apologize.

Nice try mate, but you've been sussed out fairly well I would say. My bet is that you're a journo.:ugh:
Quit now whilst the decision to do so is still yours.

Zeke
8th Nov 2009, 07:38
The Australian Transport Safety Bureau said it believed a faulty component, called the air data inertial reference unit (ADIRU), caused the problem by feeding "erroneous and spike values'' about the angle at which the plane was flying to a flight control computer.

The ATSB has made no such statement, the final report has not been released, only an interim statement of fact. The Honeywell GNADIRU is installed on various types, it is not specific to the A330 or Airbus.

What do you think ?

I think this thread should be deleted and that you banned under your various pseudonyms from pprune.

You are nothing but a trouble maker. With an attitude like yours, you would last only 5 seconds in any airline interview, we know you cannot be a real pilot, no one would employ your personality type.

FlyBoy737800
8th Nov 2009, 08:17
" I may be completely wrong altogether, so if you can prove that you aren't a low-life Journo then I humbly apologize " - You are Gobbledock ! Sorry. :)

I am going to restrict future posts on this board as many of the members don't seem to appreciate my enlightened views but I will still be viewing :rolleyes:

Keg
8th Nov 2009, 10:10
We will miss you.

No we won't! No need to be polite when there is has been such an obvious and poorly framed wind up at the start of the thread let alone the subsequent contributions! :ok:

Worrals in the wilds
8th Nov 2009, 11:18
You are Gobbledock ! Sorry. http://images.ibsrv.net/ibsrv/res/src:www.pprune.org/get/images/smilies/smile.gif
Yes, he is. That's his user name.
I don't see that as a denial of being a journalist. Other than that, 100% with you, Cactusjack, IMHO no humble pie required.

GUARD
8th Nov 2009, 11:20
Well FlyBoy 737800,

I just took the time to read your previous several posts on A330/340 BASHING and your uncommanded 'dive' into personal attacks coupled with your obvious lack of technical aviation knowledge and I think everyone here has been quite patient with you.

Why pretend you're a pilot and that we are your colleagues? I'm not your colleague and you're not mine.

I fly the 330 and find it to be a magnificent aircraft which has had a few glitches. Thats aviation my friend.

Stop dramatising the incident and do like the rest of us.....await the final ATSB report.

Mods....Lock the thread:ok:

GUARD:ok:

drshmoo
8th Nov 2009, 11:42
FlyBoy737800 - your such a struggler!

What about grounding the A330-200, why just stop at the 300s?

I am going to restrict future posts on this board as many of the members don't seem to appreciate my enlightened views but I will still be viewing

Your enlightened views are relative - perhaps you should be posting on boards discussing "the hills" & Britney Spears etc

looks like we have a
http://bookreviewsbybobbie.files.wordpress.com/2009/08/troll.jpg

Looks like we need some

http://i51.photobucket.com/albums/f399/myfask/258Troll_spray.jpg

Nose wheel first
8th Nov 2009, 12:34
Flyboy..... the only place the A330 has been "beleaguered" is here on Prune by you as flyboy and your various other pseudonym's. (Tim Hamilton was another one as I recall)

Do you really think if the aircraft was so "unsafe" that the guys and girls who fly it would happily spend hundreds of hours a year in it and by and large enjoy flying it? :ugh:

BTW...... is this you FlyBoy737800???

Go speed dating with Flyboy737800 from Brisbane, Australia – Online Speed Dating (http://www.speeddate.com/personals-in-brisbane-australia/2769213/flyboy737800.html)

FlyBoy737800
8th Nov 2009, 19:53
Just 1 more reply till I go into seclusion.

Guard - You say I am not your collegue but good to see I am your friend
"Thats aviation my friend"

Nose Wheel First - No not me.

No more posts from me, as many of you don't appreciates my enlightened view of the beleaguered A330. I will not post again till this aircraft falters again or when the truth, in my view, is finally revealed - you will all have egg all over your faces. I sincerely hope this will not happen but I fear it will.

I am sorry if this is going to make my many supporters sad but I am just not willing to be berated any longer by the battalions of mono dimensional, robotic drones.

Till then, fly safe - FlyBoy737800 signing off. ;)

smiling monkey
8th Nov 2009, 20:18
There's no need for long good byes moron. You sound like a 5 year old. Good riddance.

Balthazar_777
8th Nov 2009, 20:28
Mate, just go.

So verbose, but no substance.

If you know so much, share.