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MERGED: Air Asia Turnback Perth 25 Jun 17

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MERGED: Air Asia Turnback Perth 25 Jun 17

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Old 29th Jun 2017, 11:59
  #221 (permalink)  
 
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Originally Posted by kutu0062
I have not read all posts on this thread but I was a passenger on the plane and can clarify a few things first hand. ...
Thanks for the info.
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Old 29th Jun 2017, 22:22
  #222 (permalink)  
 
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Originally Posted by neville_nobody
Well not sure which aircraft you are referring to but the one I fly can land there at MLW, single engine, dry runway, factored.
My assumption in my previous post was that the aircraft is capable of doing it and that the weather was OK.
Who is to say you will be at or below max landing weight when you divert to Forrest? Coming back from Perth with a full plane and heaps of gas on my type (should be obvious) you would be many tonnes overweight. With a cargo fire indication you're not exactly going to hold for an hour to burn off the extra gas!
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Old 30th Jun 2017, 00:32
  #223 (permalink)  
 
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Tony says he did great!

From The West, 29 June 2017
AirAsia boss super proud of ‘pray’ pilot
AirAsia boss Tony Fernandes has lavished praise on the pilot and crew of a flight from Perth to Kuala Lumpur after a mid-air drama caused by a major engine malfunction.

Despite widespread condemnation of the captain for telling passengers to pray for their survival as they returned to Perth with the A330 shaking severely, Mr Fernandes said he was “super proud of Captain Ibrahim” .

“AirAsia don’t make engines and all airlines have engine failures,” Mr Fernandes said in a Facebook post. “But when it does happen, it takes great pilots and great leadership in times of crisis. I’m beaming with pride.

“From videos you can see all guests calm, and from the many emails and WhatsApp I got, the captain’s announcements kept everyone calm.”

Mr Fernandes said “if it was a full-service airline the pilot would have been a hero” .

“But because it’s a lowcost carrier, press and so-called experts make wild accusations and forget the heroics of our crew.

“I want to thank the many Australians who have praised AirAsia for all we have done despite all the adverse press.”

Australian and International Pilots Association vice-president Shane Loney said the captain “could have worded things differently” .

“We don’t usually invite our passengers to pray,” Mr Loney, a Qantas A380 pilot, said. “We know the aeroplanes are well built and reliable pieces of kit.”

He said there would be many pilots looking at the AirAsia X incident and how they might handle themselves in a similar situation.

“If we’re in a position like that in the future we might handle it a little better as a result of this incident,” Mr Loney said.

Other pilots questioned Capt. Ibrahim’s training.

“Sounds like the captain should attend a course in how to calm passengers. Prompting them to pray is obviously not the best idea!” wrote Airbus Fan on AvHerald.com.

The Australian Transport Safety Bureau and AirAsia X are investigating the incident , described as an “engine malfunction” .

Other aviation experts suggested the problems occurred because of a blade ingestion.
Originally Posted by AirbusA320A321
Coming back from Perth with a full plane and heaps of gas on my type (should be obvious) you would be many tonnes overweight. With a cargo fire indication you're not exactly going to hold for an hour to burn off the extra gas!
Compare apples with apples. You wouldn't be using YFRT as an EDTO alternate. Neville Nobody would be because he has the landing performance. As for a cargo fire, if you're going to crash on landing due to runway length, then that's a problem you'll have to work out. Nothing to do with YFRT per se.
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Old 1st Jul 2017, 00:32
  #224 (permalink)  
 
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Comments from a passenger:

"At times the vibration of my seat back was too much to be able to rest against. I had to sit forward in the seat" and "The passengers around me were discussing why we were not landing at a closer airport"

Mr Fernandes said in a Facebook post. “But when it does happen, it takes great pilots and great leadership in times of crisis. I’m beaming with pride."

I'll bet Mr Fernandes wouldn't be "beaming with pride" had the severely vibrating engine module come away with part of the wing abeam Geraldton.

Unbelievable.
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Old 1st Jul 2017, 08:32
  #225 (permalink)  
 
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Doubt it!

Originally Posted by Unregistered_
Comments from a passenger:

"At times the vibration of my seat back was too much to be able to rest against. I had to sit forward in the seat" and "The passengers around me were discussing why we were not landing at a closer airport"

Mr Fernandes said in a Facebook post. “But when it does happen, it takes great pilots and great leadership in times of crisis. I’m beaming with pride."

I'll bet Mr Fernandes wouldn't be "beaming with pride" had the severely vibrating engine module come away with part of the wing abeam Geraldton.

Unbelievable.
Highly unlikely that would have happened in spite of the vibration! Engines are held on (basically) by a couple of BIG bolts that are intended to shear when stresses get too much....... bigger worry would be it tearing off and striking the wing front on the way up and over though manufacturers have rerouted most of the hydraulics, fuel and electrics away from this area owing several aircraft having been lost some decades back!

Things like overnight(s) passenger accomodation, new engine availability, lack of knowledge of the chosen alternate airport can all contribute to a captain taking the "long way home!"

Damned if he does and damned if he doesn't!
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Old 1st Jul 2017, 08:57
  #226 (permalink)  
 
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Originally Posted by RetiredTooEarly
Highly unlikely that would have happened in spite of the vibration! ......
Please take another look at my post # 213 or, better still, read the full report at this link:

https://www.mot.gov.sg/news/20140822...l%20Report.pdf

The CX A330 in question had significant cracking to the pylon sub-structure after
only 28 minutes for their turn-around with vibration levels that could be presumed to be lower than in this event.
We'll see what the current investigation shows. If it all comes out hunky-dory then I'll be more than impressed.
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Old 1st Jul 2017, 09:04
  #227 (permalink)  
 
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I wonder if the aircraft is designed to take such vibrations for the maximum ETOPs duration.
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Old 1st Jul 2017, 16:11
  #228 (permalink)  
 
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Originally Posted by unobtanium
I wonder if the aircraft is designed to take such vibrations for the maximum ETOPs duration.


One has to wonder. ETOPS divert is at 320-335 KIAS. It will be interesting to see if the A330 crew maintained that speed or if they reduced speed to reduce the vibration.
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Old 1st Jul 2017, 16:46
  #229 (permalink)  
 
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One has to wonder. ETOPS divert is at 320-335 KIAS. It will be interesting to see if the A330 crew maintained that speed or if they reduced speed to reduce the vibration.
Changing the speed in either direction, up or down, likely would reduce the vibration in the cabin.

Of course it's up to the pilot to set the speed according to his needs.

As stated earlier, the issue is not related to structural integrity. The pilot simply follows his training.

We'll see what the ATSB has to say about this eventually since there is always room for "lessons learned"
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Old 1st Jul 2017, 20:51
  #230 (permalink)  
 
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Originally Posted by misd-agin
One has to wonder. ETOPS divert is at 320-335 KIAS. It will be interesting to see if the A330 crew maintained that speed or if they reduced speed to reduce the vibration.
etops divert speed is any speed you like.
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Old 1st Jul 2017, 23:04
  #231 (permalink)  
 
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Our procedures specify a speed. Obviously emergency authority will help when you're explaining at the big green table if you choose a different speed.
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Old 2nd Jul 2017, 00:05
  #232 (permalink)  
 
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Originally Posted by misd-agin
Our procedures specify a speed. Obviously emergency authority will help when you're explaining at the big green table if you choose a different speed.
At my company the EDTO planning certainly has a specified speed – but there is absolutely no requirement to fly at that speed when diverting. EDTO is simply a planning and paperwork exercise that doesn’t necessarily apply in the real world.
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Old 2nd Jul 2017, 00:36
  #233 (permalink)  
 
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Originally Posted by Misd
ETOPS divert is at 320-335 KIAS
Seriously? What is your best range speed single-engine?
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Old 2nd Jul 2017, 04:52
  #234 (permalink)  
 
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It seems some are confusing EROPS, ETOPS, EDNO, engine failures, vibration and common sense.
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Old 2nd Jul 2017, 04:58
  #235 (permalink)  
 
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Originally Posted by Tankengine
It seems some are confusing EROPS, ETOPS, EDNO, engine failures, vibration and common sense.
you forgot edto
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Old 2nd Jul 2017, 10:12
  #236 (permalink)  
 
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Pretty sure that if the Capt's butt cheeks did'nt suck that seat cushion up off his seat, I'm damn sure the resulting vibrations would have bashed it up into a very dark place and he's still picking bits of cushion out now as we speak. FFS, land at nearest available!!!


McHale.
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Old 2nd Jul 2017, 12:57
  #237 (permalink)  
 
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ETOPS has absolutely nothing to do with this. 4 eng jets are not bound by etops, but i can bloody well guarantee that if I was flying a 380 that had an engine failure and was shaking the jet as badly as was happening on the 330, I would have landed at the nearest suitable - ie Learmonth.

Besides, doesn't the manufacturer have capital letter LAND ANSA in amber on the ECAM for the 330? (It did when I used to fly em). Looks like a lot of commentators have forgotten about that thing called airmanship, and CDF.

As for the "saying a prayer" bit - well if that isn't the most terrible display of command leadership, and that that is endorsed by any actual captains here, then I weep for the future of aviation.
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Old 2nd Jul 2017, 13:32
  #238 (permalink)  
 
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D7237 turn-back

FR24 shows that the aircraft had started a turn-back to Perth less than 3 minutes after the big bang. For what it's worth, it also shows one of the first things to happen was a sharp climb of > 800 ft before commencing a swift descent, initially to 24,000 ft. No doubt they were pretty busy during the first several minutes.


So now lets throw in some politically incorrect conjecture.
Having made the decision to return to Perth and committed to that path, the cultural reluctance to reverse that decision took over.
Once the aircraft was pointed at Perth, that's where it was going, no matter what.


Conjecture? Absolutely, but not out of the realms of possibility.
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Old 2nd Jul 2017, 22:11
  #239 (permalink)  
 
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I dont see why that conjecture is politically incorrect.
Not reviewing and revising decisions is a very common mistake made by people in all trades and all walks.
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Old 3rd Jul 2017, 01:25
  #240 (permalink)  
 
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It seems some are confusing EROPS, ETOPS, EDNO, engine failures, vibration and common sense
I think folk are hinting at how can ETOP limits be justified when such failures as this occur, and there have been a number from all accounts. 370 minutes on an A350, or whatever the ETOP limit is for the aircraft under discussion, being shaken, not stirred, is the point being made I think.
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