PPRuNe Forums - View Single Post - Reducing thrust in cruise for overspeed
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Old 20th Jun 2014, 15:12
  #119 (permalink)  
vilas
 
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OSCAR YANKEE
Oscar I am paying full attention. ALT* surely matters because ATHR would go to speed mode and in this situation it should go idle. He had already selected .76M and without ALT* that would have only increased the ROC to reduce speed. Coming to your point why do you want VS0 is to get ATHR in speed mode to bring the speed back and stop climb but when the guy has brought the thrust to idle with speed brakes and still the aircraft tends to over speed how VS0 would have helped? However had he left the AP on aircraft should have levelled out and he would have had more time to pay attention to adjust thrust manually or put it in auto. He followed the correct procedure except that there was no need to disconnect AP because had the over speed continued the AP would have tripped by HSP activation and then in any case you take over manually but at least give it a chance.
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