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Result of incident happened on MH124

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http://www.thestar.com.my/news/story.asp?f...4071&sec=nation

 

What happened on flight MH124

 

BY ROYCE CHEAH

 

PETALING JAYA: Two Malaysia Airlines (MAS) pilots saved the lives of 177 passengers with their quick thinking when the plane's computer system went faulty after take-off from the Perth International Airport, a preliminary report released by Australian authorities has established.

 

Flight MH124, headed for Kuala Lumpur on Aug 1, had been airborne for 25 minutes when it suddenly plunged 200m, forcing the Boeing 777 to turn back for an emergency landing.

 

The pilots, Capt Norhisham Kassim and First Officer Caleb Foong, earned praises from the passengers and crew for their calm handling of the situation.

 

According to the report by the Australian Transport Safety Bureau released on its website last Friday, the pilots were alerted to a low airspeed warning at an altitude of 11,582m.

 

At the same time, the primary flight display indicated that the plane was turning left, while the speed display showed that the plane was “going too fast and too slow simultaneouslyâ€.

 

The plane then pitched up to 12,497m and the indicated airspeed decreased from 500km/h to 292km/h.

 

At this point, the stall warning and stick shaker devices were activated.

 

A stall occurs when the plane is at a speed where there is insufficient lift to keep it flying. A stick shaker device vibrates the pilot's controls to alert him of this.

 

The report revealed that Capt Norhisham then disconnected the autopilot and lowered the plane’s nose to prevent the stall.

 

However, the aircraft’s automatic throttle, which should have been off, came on again and compensated by increasing speed. 

 

Capt Norhisham countered this by pushing the thrust levers to the idle position but the aircraft pitched up again and climbed another 610m.

 

The pilot then notified the air traffic control that the plane could not maintain altitude and requested descent and radar assistance to return to Perth.

 

As the plane descended 6,096m, the primary flight display appeared normal and Capt Norhisham tested the plane's left and right autopilot systems.

 

The autopilot systems responded by turning the plane right and pitching the nose downwards. 

 

As a result, Capt Norhisham had to fly the plane manually for the remainder of the flight. 

 

It was also noted that the automatic throttle switches remained armed.

 

When the flight was at an altitude of 914m and preparing to approach the runway, the flight display again indicated a low airspeed condition. 

 

Again, the automatic throttle compensated by increasing thrust.

 

During the final minutes of descent, the aircraft warning system indicated a wind shear condition (a sudden cut in wind speed), but the pilots continued the approach and landed safely.

 

The report stated that investigations traced the plane's air data inertial reference unit (Adiru) as the source of the problem.

 

The unit has since been sent to its manufacturer, Boeing, for examination under the supervision of the United States National Transportation Safety Board. 

 

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BIG THANKS TO Capt Norhisham Kassim and First Officer Caleb Foong

and also the T7..haha

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A comment from our beloved TK on this subject would be very much appreciated. He could be the person with the most authority to speak on this matter due to his profession as a B777 pilot??

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A comment from our beloved TK on this subject would be very much appreciated. He could be the person with the most authority to speak on this matter due to his profession as a B777 pilot??

 

 

Ahaha.. by this time you can ask Capt Hisham straight, he's an MWinger too ^_^

 

 

I've been looking to know about this Perth incident ever since Capt Nik mentioned it! Although it's been more than 2 years now and too late to say, but nevertheless, kudos for the calm piloting, Capt Hisham :good:

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Ahaha.. by this time you can ask Capt Hisham straight, he's an MWinger too ^_^

I've been looking to know about this Perth incident ever since Capt Nik mentioned it! Although it's been more than 2 years now and too late to say, but nevertheless, kudos for the calm piloting, Capt Hisham :good:

 

This is the photo of Capt. Hisham taken during the MWing Flying Sesssion #1 by Irni:

 

2598738570103096648S600x600Q85.jpg

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