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Air Asia returns to Perth

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Air Asia returns to Perth

Old 16th Oct 2017, 02:41
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Air Asia returns to Perth

AirAsia flight returns to Perth after mid-air scare - BBC News
AirAsia flight returns to Perth after mid-air scare



An AirAsia Indonesia flight has been forced to turn back to Australia after pilots were alerted to a possible loss of cabin pressure, airport officials say.
Flight QZ535, bound for the Indonesian island of Bali, changed course about 25 minutes after take-off on Sunday.
The Airbus A320, carrying 151 people, landed safely at Perth Airport.
AirAsia said the flight experienced a "technical issue". Australian media said it had appeared to lose altitude.
"We were all pretty much saying goodbye to each other. It was really upsetting," one passenger told the local Nine network.
A video taken on the plane, broadcast by local media, shows oxygen masks hanging from the ceiling and one person shouting "passengers get down, passengers get down".

Goes on
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Old 16th Oct 2017, 07:17
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I think the difference is the following (quote BBC News)
A video taken on the plane, broadcast by local media, shows oxygen masks hanging from the ceiling and one person shouting "passengers get down, passengers get down".
Another passenger, Claire Askew, told the Seven network that "panic was escalated" by airline staff who were screaming and appeared to be in tears.
CC not managing and worse escalating a situation they should be trained for, is not good.

Last edited by hoss183; 16th Oct 2017 at 07:32.
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Old 16th Oct 2017, 08:37
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And no mention, yet, of 'An Emergency Landing'. Have all the journo's gone to sleep?
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Old 16th Oct 2017, 12:38
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passengers on interview complain they never heard from the captain until it was over, and that there was no flow of oxygen.

I think when pax hear the words over the PA "emergency descent" most of them think they're gonna die

I also think that when the masks drop they don't realize the have to pull them down to activate the generator.

can the mask be worn with the pin still in the generator?
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Old 16th Oct 2017, 13:52
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SOP for depressurization is not "Cabin crew scream and wail, and shout 'passengers get down.' "

What is 'passengers get down' even supposed to mean, anyhow?
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Old 16th Oct 2017, 16:38
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What's this 'activate the generator' about. As SLF that listens to the briefings, I'd always assumed that pulling the mask down would remove a kink in the pipe designed to restrict oxygen flow to unused masks and that any oxygen generator or bottles would be activated automatically when the masks dropped. Am I wrong?
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Old 16th Oct 2017, 16:48
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Pulling the mask down starts a chemical reaction in the Passenger Service Unit over your head that supplies 10 minutes of oxygen to the four masks at that station. There are no oxygen bottles supplying passenger oxygen, with the exception of portable bottles for medical use.
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Old 16th Oct 2017, 18:23
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Passengers believe that there is no oxygen flow because they expect the mask bag to inflate.
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Old 16th Oct 2017, 18:31
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The action of the mask dropping does not start the flow of oxygen. The PAX must pull down on the mask to remove the pin, that action starts the chemical reaction. The mask will not inflate initially.

It sounds like some cabin crew are not well trained and had no idea of what was happening. The "get down" command sound like a brace for impact command?
At my airline the Captain will make an announcement once established in the descent.

It's easy to Monday morning quarterback and we have to remember emergencies are never neat and tidy, even in training when you know it's coming.
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Old 16th Oct 2017, 20:05
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The quote is a "person" saying "passengers get down" No mention that it is the cabin crew.
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Old 16th Oct 2017, 20:45
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Passengers get down...

...second-language (or misheard) English in stressful situation for "passengers: sit down"?
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Old 17th Oct 2017, 00:50
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Anyone see the video where someone was wearing the mask just over their mouth (and chin) rather than over the nose and mouth?

Now there's someone who paid attention during the safety brief!
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Old 17th Oct 2017, 06:42
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If this was due decompression, pilots don't have the time to communicate with the passengers. What is important is to get the aircraft to descend to a safe level as soon as possible.

The cabin crew however were either not trained properly or forgot the correct shout command which is in the lines of grab mask, fasten seatbelts, breathe normally. 'Passengers get down!' does not achieve anything nor is it a requirement. Wear the mask and continue watching the movie you downloaded to your laptop.
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Old 17th Oct 2017, 06:55
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I wonder how many people believe, in their panic, that they will be able to 'sense' a flow of O2? It has no smell and no sensation. The little green flow indicator is it; and that's too complicated for pax to know about.
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Old 17th Oct 2017, 07:50
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I'm sure that many do, and they probably expect the bag to immediately inflate and presume there's no flow if it doesn't.

At least some airline safety briefings do specifically call out words to the effect of "the bag may not inflate but oxygen is still flowing", but certainly not all. And who pays attention to the safety briefing anyway..?*

* Actually, I do; I take about 80 flights a year but I still pay attention and have a quick look at the safety card. The former out of courtesy to the cabin crew as much as anything, the latter to remind me of some of the peculiarities of the type (if this plane has overwing slides or expects you to slide down the flaps, if all the exits are usable in a water landing or if the rear ones need to stay closed for bouancy, that sort of thing.) Not that it's information I ever hope to need...
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Old 17th Oct 2017, 12:36
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Originally Posted by MD83FO
I think when pax hear the words over the PA "emergency descent" most of them think they're gonna die
I agree. What is the point of that PA?
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Old 17th Oct 2017, 17:25
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When cabin pressure fails, the pilots have to wear their Quick Donning Masks as a first step, then ask the cabin crew to ensure passengers wear their masks and then effect a controlled descent without panic. The flying crew shall wear the masks as a first step, to prevent TUC (time of usefull consciousness) playing tricks, which is only 2 to 3 minutes at heights. .
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Old 17th Oct 2017, 17:56
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At FL400 it is 15 to 20 seconds.

https://en.wikipedia.org/wiki/Time_o..._consciousness
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Old 18th Oct 2017, 05:50
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Originally Posted by Capn Bloggs View Post
I agree. What is the point of that PA?
So that the hostie who is not strapped in has a half second to grab something before she goes weightless or tumbling down the cabin. Serious injuries ate possible in an emergency descent.

And respectfully, if you don't work for Air Asia then you won't be able to say what the "correct" commands are.

"Get down" was probably at the point of final appriach- the only thin I noticed in the video was someone being shouted to sit down and fasten seat belt (and some d1ckhead too busy filming to wear the mask properly)
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Old 18th Oct 2017, 05:52
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Also the clip of the guy in the mask is to the trained eye clearly AFTER they've leveled off- so by that time all ye crew would be doing is waiting for further PAs and telling anyone not compliant to.... "fasten your seat belt!" (Which is what they did)
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