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Old 31st March 2016 | 18:52
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owl-attack
 
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B737 NG - Electricals
Hello

FCOM - "During a Flight Director or Autopilot ILS approach at glideslope capture. This isolates DC Busses during approach to prevent a single failure from affecting both navigation receivers and flight control computers"

Can some one please explain what single failure to which system are they talking about and how will this affect navigation receivers and FCC is the cross bus tie relay is not open (DC Busses Isolated) during glide slope capture

Thanks
Regards
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