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1 Pitch Up Incident (Boeing 777) on Fri Sep 25, 2009 12:03 pm

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Pitch Up Incident (Boeing 777)

And Many Thanks to aardvark2zz (Youtube)




Notice the Nx, Ny, Nz, acceleration and AOA indications go nuts.

Here is a video of almost a crash from the Australian safety board that posted an animation video using a pathetic video format.

I converted the mute video and added all sounds to it. (Not the best) Some problems are due to Microsoft's Movie-Maker.

Watch it in HD resolution.

Notice the pilot allows the plane to seriously stall.

Also notice in the 2nd half, the plane turns left while the pilot is turning right. !!?????

Malaysia Airlines Flight 124

On 1 August 2005 a serious incident involving Malaysia Airlines Flight 124, occurred when a Boeing 777-2H6ER (9M-MRG) flying from Perth to Kuala Lumpur also involved an ADIRU fault resulting in uncommanded manoeuvres by the aircraft acting on false indications.[14] In that incident the incorrect data impacted all planes of movement while the aircraft was climbing through 38,000 feet (11,600 m). The aircraft pitched up and climbed to around 41,000 feet (12,500 m), with the stall warning activated. The pilots recovered the aircraft with the autopilot disengaged and requested a return to Perth. During the return to Perth, both the left and right autopilots were briefly activated by the crew, but in both instances the aircraft pitched down and banked to the right. The aircraft was flown manually for the remainder of the flight and landed safely in Perth. There were no injuries and no damage to the aircraft. The ATSB found that the main probable cause of this incident was a latent software error which allowed the ADIRU to use data from a failed accelerometer.

The US Federal Aviation Administration issued Emergency Airworthiness Directive (AD) 2005-18-51 requiring all 777 operators to install upgraded software to resolve the error.

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