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Thai Airways Emergency!


Mobi

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Hi Jai Dee, hope you have recovered and are able to post to clear up this matter when you feel well enough. Being someone who suffers extreme breathing difficulties I can understand how traumatic it must have been if there was any pressure loss in the cabin and also if there was increased heat which also makes it hard to breathe - not funny :o

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Wouldn't the cabin get cold at high altitude if ventilation stopped working?

No.

If both fans stopped working then it would get cold and cabin pressure would drop. The same air bleed system that supplies air conditioning also feeds the air that keeps the cabin pressurized. According to the technical site for the 737, the loss of pressure would be anywhere from 2000-4000 feet per minute equivalent. That means that with the cabin pressure already at 8000ft it could drop to critical levels in less than two minutes. If no O2 masks dropped then yes, it is an emergency.

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TG 415 from Bkk to KL emergency landing at Hat Yai. Plane de pressurised at cruising altitude, oxygen did not work, forcing emergency landing.

Jai Dee.

11.20 am

I hope he's All right.

Anyone have any news?

Nation and Bangkok Post both reporting aircon problems.

http://www.nationmultimedia.com/breakingne...newsid=30055061

THAI plane makes emergency landing at Hat Yai airport

Hat Yai, Songkhla - A Thai International Airlines plane heading to Kuala Lumpur makes an emergency landing at the Hat Yai International Airport Tuesday.

Wicha Noenlop, director of the airport, said none of 287 passengers onboard THAI Flight TG415 were injured when the plane made an emergency landing at 10 am. The plane left the Suvarnabhumi International airport at 9 am.

He said the pilot sought an emergency lading after there was a problem of air conditioning system in the passenger cabin.

He said the temperature in the passenger cabin was too high because of the problem.

If the air condition system could not be fixed soon enough, passengers would be transferred to another flight to Kuala Lumpur, he said.

The Nation

xxxxxxxxxxxxxxx

http://www.bangkokpost.com/breaking_news/b...s.php?id=123324

Thai Airways makes emergency landing at Hat Yai

(BangkokPost.com) - Thai Airways flight TG 415 heading from Bangkok's Suvarnabhumi airport to Kuala Lumpur made an emergency landing in Hat Yai on Tuesday morning, after captains found that air conditioning system in passenger cabin did not work properly.

All of the 287 passengers were reportedly safe.

The aircraft asked for emergency landing at the Hat Yai International Airport at 10 am, which was about an hour after it took off.

According to the airport director Wing Commander Wicha Nernlop, a captain reported that temperature in passenger cabinet was high, which was resulted from a problem of the air conditioning system.

It is expected that the plane will resume its flight in the afternoon. But if the problem cannot be fixed, Thai Airways will send in another plan to take passengers from the airport to their destination.

xxxxxxxxxxxxxxxxxxxx

Airconditioning failure? What a load of <deleted>!!!

Firstly, thanks to all who have expressed concern and well wishes... it was a harrowing experience for my wife and I, as well as the other passengers and flight crew. My wife, as well as some members of the Thai flight crew, were clutching their buddhas and amulets and praying that we were not going to crash. From the wide-eyed looks on the faces of the flight crew, it was obvious that we were in serious trouble.

First hand observations: we were about an hour into the flight, flying at nomal cruising altitude (35000 ft?) when there was a loud bang and the plane suddenly dropped. All the oxygen masks dropped out from the overhead compartments and an automatic pre-recorded message came over the itercom: "Emergency, emergency. Please put on your oxygen masks". The jet engines were screaming and the plane was rapidly descending. The cabin crew strapped themselves into their seats and also tried to put on their masks. Despite putting on the masks correctly, it was soon evident that there was no oxygen supply, as the plastic bags than connect to the masks and the gas delivery tube were not inflating... so basically, everyone was just hyperventilating. Two children in our section of the plane fainted, and were resuscitated by cabin crew with portable oxygen bottles and masks.

It was the quickest and roughest descent I have ever experienced... I would guess at about 15 minutes from the time of depressure to actual touchdown at Hat Yai.

The air con was not working during descent, but it certainly was not hot until we were actually taxiing from the runway to the terminal.

We had about a 5 hour wait at the transit lounge in Hat Yai until a replacement A330 Airbus arrived from BKK to take us on to KL.

So... the news reports were accurate in one respect... there were no injuries, but there were certainly children fainting as well as other passengers experiencing ear problems with rapid depressurization.

/Edit - I hasten to add that I used my mobile phone to SMS George, Mobi et al after disembarking. I don't think anyone used their phone on the plane itself... it was all too chaotic and turbulent.

Edited by Jai Dee
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Glad to hear you and your family are ok, Jai Dee. :o

I just knew you didn't cause it from complaining about the heat. :D

Hopefully, the truth about the incident will get out and is well-publicized.

/Edit. Also glad to hear you didn't cause it from using your mobile phone. :D

Edited by sriracha john
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Nice to hear from you Jai Dee and that everyone is safe.

From what you described it must have been a terrifying experience for all on board :D . Without you, we will never find out what really happend on that flight. Can't believe and trust the authorities and the media on their take of this event :o

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It's been a long time since the hopper did a rapid decompression in a chamber, but she remembers the air suddendly filled with a dense fog - did this happen? Rapid or not, it definitely sounds like a loss of cabin pressure. The failure of the plastic bags to inflate should not be taken as a failure of the O2 system tho; these are constant flow systems (unlike the pressure-demand system up front), and the bag is meant only as a rebreathing device to mix the incoming O2 with the exhaled breath. The time of useful conciousness at that altitude is several minutes, and the only symptom is euphoria, so IMO the kids were fainting from panic-induced hyperventilation, not hypoxia. Sudden decompression is not uncomfortable, but the subsequent rapid recompression certainly can be.

Have a nice flight...

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Nice to hear from you Jai Dee and that everyone is safe.

From what you described it must have been a terrifying experience for all on board :D . Without you, we will never find out what really happend on that flight. Can't believe and trust the authorities and the media on their take of this event :o

I can - par for the course. Anything to protect the reputation and business of the national carrier, to say nothing of loss of face. Lying and reinventing the facts come second nature in this part of the world I'm afraid :D

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The bag will not inflate even tho oxygen is being provided. Each block of 2-3 masks has its own chemical oxygen generation system. So all the masks in the cabin are fed from their individual generator - not one system for the whole cabin but seperate systems for every 2-3 masks.

Glad it worked ok can be frightening experience....but the flightdeck crew practice this time and time again in recurrent training no big deal up the front end sounds like it was well handled by them.

The rapid descent was pilot initiated as standard with the turbulent descent due to full speedbrake deployment and possibly the gear coming down if required.

Edited by dekka007
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Happy to read that everyone made it ok. I've been through flights that entailed bird strikes, blown engine oil seals and extreme turbulence but nothing like the rapid decent it sounds like you made. In a weird sort of way it's kinda fun to look back at that kind of experience and think, whoa, that was exciting - I wonder if flight crews, especially pilots and First Officers feel the same way. Only true of course if it has a happy ending.

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Jai Dee - Very good to hear that you, your wife, and all the passengers landed safely. I do hope that you take the time to write the Nation and BKK Post a letter to the editor detailing your experience versus what was published in the news.

Are you taking a bus back to Thailand?

rgds

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Airconditioning failure? What a load of <deleted>!!!

Firstly, thanks to all who have expressed concern and well wishes... it was a harrowing experience for my wife and I, as well as the other passengers and flight crew. My wife, as well as some members of the Thai flight crew, were clutching their buddhas and amulets and praying that we were not going to crash. From the wide-eyed looks on the faces of the flight crew, it was obvious that we were in serious trouble.

First hand observations: we were about an hour into the flight, flying at nomal cruising altitude (35000 ft?) when there was a loud bang and the plane suddenly dropped. All the oxygen masks dropped out from the overhead compartments and an automatic pre-recorded message came over the itercom: "Emergency, emergency. Please put on your oxygen masks". The jet engines were screaming and the plane was rapidly descending. The cabin crew strapped themselves into their seats and also tried to put on their masks. Despite putting on the masks correctly, it was soon evident that there was no oxygen supply, as the plastic bags than connect to the masks and the gas delivery tube were not inflating... so basically, everyone was just hyperventilating. Two children in our section of the plane fainted, and were resuscitated by cabin crew with portable oxygen bottles and masks.

It was the quickest and roughest descent I have ever experienced... I would guess at about 15 minutes from the time of depressure to actual touchdown at Hat Yai.

The air con was not working during descent, but it certainly was not hot until we were actually taxiing from the runway to the terminal.

We had about a 5 hour wait at the transit lounge in Hat Yai until a replacement A330 Airbus arrived from BKK to take us on to KL.

So... the news reports were accurate in one respect... there were no injuries, but there were certainly children fainting as well as other passengers experiencing ear problems with rapid depressurization.

/Edit - I hasten to add that I used my mobile phone to SMS George, Mobi et al after disembarking. I don't think anyone used their phone on the plane itself... it was all too chaotic and turbulent.

Scary and frightening experience Jai Dee.... :o

Happy all went well in the end but did anybody (later) give any explanation as to why there was NO oxygen supply with the masks ?

Thinking of it...someone should report this to the Plane manufacturer (Boeing ?), otherwise you will NEVER know or hear from Thai Airways...

LaoPo

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Believe the "no oxygen" was based on mask bag not inflating. Several posters have pointed out that these bags are not designed to inflate (and as I recall preflight briefings that is correct information).

Of course I'm not sure what exactly happened.

This is what I found:

"Aircraft emergency oxygen systems are emergency equipment fitted to commercial aircraft, intended for use when the cabin pressurisation system has failed and the level of oxygen in the cabin atmosphere drops below a safe level. It consists of a number of personal oxygen masks by passenger seats, and some form of central oxygen generator."

"Most commercial aircraft are pressurized at a maximum cabin altitude of 8,000 feet, where it is possible to breathe normally without an oxygen mask. If the cabin altitude reaches 14,000 feet or higher, or a decompression occurs and hypoxia is imminent, compartments containing the oxygen masks will open automatically, either above or in front of the passenger and crew seats, and in the lavatories.

Most oxygen masks have a yellow facial cup with elastic bands for securing the mask to the passenger's face. The mask may also have a concentrator bag that may or may not inflate depending on the cabin altitude. Passenger oxygen masks cannot deliver enough oxygen for sustained periods at high altitudes. This is why the flight crew needs to place the aircraft in a controlled emergency dive to a lower altitude where it is possible to breathe without emergency oxygen. If there is a fire on board the aircraft, masks are not deployed, as the production of oxygen may further fuel the fire."

http://en.wikipedia.org/wiki/Emergency_oxygen_system

Maybe Jai Dee can explain more ? :o

LaoPo

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why there was NO oxygen supply with the masks ?

you will NEVER know or hear from Thai Airways...

a spokesman for thai airways said

"oxygen ..... no have. you come back tomorrow , have "

:o:D:D

I love it :D

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A couple years ago, on a flight in the US, the aircraft lost its windshield at 30,000 feet. Disquieting to be sure, the thought of calling, texting, or emailing someone didn't cross my mind. I had no idea that flying without air conditioning could be such a harrowing experience.

Life is filled with experiences, and the manner in which we handle them shows our strength of character, our mettle, and our emotional fortitude.

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No doubt scarey, but one thing I learned - once you are in the tin can you are powerless, so might as well relax and hope it works out in the end. Good to know u and the wife are ok Jai Dee. :o

Curious what sort of compensation did TG offer for this nightmare flight?

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