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Phuket Flight Diversion Not an Emergency Landing, Says Airline

Wednesday, April 1, 2015
PHUKET: Orient Thai Airlines today dismissed a report that its flight OX682 from Phuket to Chengdu had made an emergency landing at Kunming airport, saying it landed normally and safely with no passengers injured.

Defending the flight on its Facebook page, Orient Thai Airlines said its pilot and flight attendants strictly abided by the aviation safety measures.

It dismissed a report that the plane developed engine trouble, sending it to plunge steeply, and causing some passengers to bleed from the noses and mouths.

It said the Flight OX682 departed Phuket for Chengdu with 132 passengers, pilot and eight crew members at 8pm on Friday and was scheduled to arrive in Chengdu at 1am the next day.

But at 11pm (Bangkok time) it received message that the flight landed safely at Kunming airport with no passenger or crew members injured.

It said all flight attendants have performed their duties very well and none of them have screamed or in panic as claimed in the news report.

All passengers were checked into hotels for overnight stay and they were flown off the next day in another plane departing from Don Muang airport.

The plane landed safely at Chengdu at 5.30pm (local time) on Sunday.

Orient Thai Airlines said that the incident happened because of a sudden change of air pressure in the cabin, thus forcing the oxygen masks to function automatically so as to enable passengers and flight attendants to wear.

It also said that the detour landing at the nearest airport followed the international safety standard, and its pilot has performed correctly.

Comments

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The aircraft landing was a emergency landing, coz the touch down on that airport was not according the flight schedule! Why they always lie, and try to make nothing serious happened? Pilots seem they did a good job. The comment of this airline is not building trust among future passengers. As we all know now, thai flight safety standards this moment are doubted by Japan, Korea and many more countries. The comment of this airline proves that in thai aviation passenger flying industry something is wrong. What? Well, not admitting, not taking responsebilities.

Posted by Kurt on April 1, 2015 12:12

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They can always release the black box recorder for the world to see and prove they are innocent.

Posted by Tbs on April 1, 2015 12:42

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If "sudden change of air pressure in the cabin, thus forcing the oxygen masks to function automatically" is not emergency, what is an emergency then according to Orient Thai? Fatal accident on decompression of cabin Aloha airlines style?

Posted by Sue on April 1, 2015 15:19

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Cabin pressure is maintained by air bleeding off the engines. Cabin altitude is usually around 8000ft, when a typical cruising altitude would be around 37000ft on such route (many variables define it).

Should the cabin pressure drop rapidly, ears will certainly pop and if no additional oxygen is delivered, hypoxia will cause loss of consciousness at FL 370 in about 30 to 45 sec.

Bleeding from nose or mouth is rare and if true, implies something more serious was going on.

Oxygen masks automatically deploy when cabin altitude exceeds a set limit (roughly 14000 ft).

Bleed air and aircon packs are auxiliary to engines. The system is redundant and can run off 1 engine. The failure of such a system may have been misinterpreted by the media as an engine failure.

Even dual engine failure does not cause a B737 (or any commercial plane) to plummet from the air. From FL 370 a B737 could glide apprx 100nm with no engine thrust (many variables).

When the pressure drops, pilots need to execute a emergency descent. Typically around 3500 to 5000 fpm until they reach about 10000ft where ambient pressure air contains enough oxygen for unassisted breathing.

Loss of cabin pressure can result from a lot of faults but for one engine to cause it to fail, the other bleed air system would have had to be inoperable prior to departure. If it fails en route, the crew must reduce altitude to reduce risk of rapid decompression if the other system fails. Equally high terrain routes or oceanic airspace is off limits with just one system operable.

Maintenance records and log books will show if the plane in question took off with one bleed air system "MELled" (Minimum Equipment list, i.e. items that can be inoperable for the plane to still be able to depart "legally")

Orient Thai is correct in stating it was not an emergency landing. It's a diversion due to technical fault which resulted in an emergency descent. Something they on the other hand did not mention.

It is a relatively common fault and very low risk in terms of anything labeled "emergency" in aviation.

Posted by Herbert on April 1, 2015 16:21


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