Sempre da
Flight, le sottolineature le ho messe io :
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Boeing is today expected to issue a safety information bulletin to operators and the source says the bulletin will describe how the aircraft was flying under autopilot and autothrottle control. At about 2,000ft (610m) above ground, while fast and high, the throttles were "pulled" to idle thrust and the autothrottle reverted to 'retard' mode.
The throttles remained at idle for about 100s during which time
the aircraft slowed to 40kt (75km/h) below reference speed and the aircraft descended through the glideslope. During this period the captain was "coaching" the first officer in conducting the before-landing checklist.
At about 400ft above ground the stick-shaker activated and the first officer advanced the throttles.
The captain took control and the first officer released the throttles, which then moved to idle as the autothrottle was still in retard mode.
About
six seconds later the throttles were once more advanced and the engines responded but too late to prevent the aircraft striking the ground in a nose-high attitude."