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Old 19th Mar 2019, 06:51
  #33 (permalink)  
Capn Bloggs
 
Join Date: Mar 2002
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They were in FLCH and below 100 feet. The auto thrust behaved as advised.
Red Herring. If in FLCH and HOLD, it looks to me like it will never automatically activate.

At 200ft, the IAS was ~118, with a Vref of 132.

Originally Posted by Maui
having followed FCOM procedure and approved SOP’s
What's the TCAS, EGPWS, Takeoff Config Warning system for then? Or for that matter ABS in your car?

An autothrottle that doesn't wake up even when you're almost 20kts below Vapp is stupidly designed. Period. Stop defending the indefensible.

An interesting comment from one of the NTSB board members:
Data point number two comes in the form of an FAA test pilot. In 2010, this pilot was flying a Boeing 787 on a test flight when he was alarmed to see that the autothrottle did not maintain speed while in FLCH and HOLD. The autothrottle logic on the 787 is essentially the same as the 777, and this pilot had 500 hours in the 777. Why would an experienced FAA test pilot not understand this system logic if it was that clear? He raised his concern throughout the FAA certification chain. Officials with EASA also became concerned. As a result, Boeing added additional and clearer guidance in the Boeing 787 manuals regarding this system logic. But for the Boeing 777—an airplane with the same basic system—nothing was done.
Logic. They got that wrong.

As for using FLCH during an approach...
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