Question for 767 drivers
Just a quick question on the 767 FMGS.
Whilst studying for the dreaded JAR exams, I've come across the following:
"Both FMC's normally use the left Air Data Computer (ADC). If the left ADC fails, both FMC's switch to the right ADC."
Is this correct, and if so why don't the left and right ADC's feed their respective FMC's?
Futhermore it states "Both FMC's normally use the left IRU for altitude, vertical celocity, acceleration, and heading data processing."
Again, why do they both use the left IRU for this, and what altitude output is obtained from the IRU.
Whilst this is of little relevance to the forthcoming exams, it has caused a bit of lively discussion, so a definitive answer would be good! Having studied an Op's manual we still can't clarify the position so any input would be appreciated.
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CW