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Old 5th Mar 2009, 20:26
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FE Hoppy
 
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I was a little surprised by the initial report. Not what it said but the way it said it. I seems to be written in a deliberately none technical manner. The AT mode being wrongly called flare and a lack of real data other than a couple of heights and speeds. Very different to for example a UK AAIB report.

I did note that the minimum speed mentioned matches the ADS-B data so if I look at the ADS-B trace and consider "landing speed" as quoted in the report to mean Vref then they were at Vref at about 900ft and 2.5D. That's about 30 seconds flying below Vref before the shaker fired. It seems a very long time on finals for 3 pilots not to notice. Even if it did coincide with cloud break into hazy visibility. 30 seconds is an age.

---------------added-----

Nose up trim for autoland is to ensure that if a failure causes to AP to fail the aircraft will not pitch down.

Last edited by FE Hoppy; 5th Mar 2009 at 20:29. Reason: adding info about nose up trim for autoland.
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