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Old 20th Nov 2013, 04:48
  #152 (permalink)  
Sergey Tachenov
 
Join Date: Nov 2013
Location: Russia
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was one utilising either a single or dual auto-pilot approach prior to initiating the go-around
A quote from the МАК site (boeing 737-500 investigation):
В процессе захода на посадку экипажу не удалось выполнить стандартный заход в соответствии с установленной нормативной документацией схемой. Оценив положение самолёта относительно ВПП как «непосадочное», экипаж доложил диспетчеру и начал уход на второй круг в режиме TOGA (Take Off / Go Around. Взлёт / Уход на второй круг). При этом, задействованный в процессе захода на посадку один из двух автопилотов, был отключён и дальнейший полёт осуществлялся в ручном режиме.
During the approach, the crew failed to execute standard approach in accordance with the plan defined by the normative documentation. Having assessed the aircraft position relative to the runway as "not acceptable for landing", the crew reported to the ATC and started executing a missed approach in the TOGA mode. At that moment one of the two autopilots activated for the landing was disengaged and the rest of the flight was being carried manually.
Sorry for my lame English (especially when it comes to aviation terms), but it should be pretty clear that they were using only one of the autopilots during the approach, or else how would disengaging one of them put the aircraft into manual flight mode?
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