PPRuNe Forums - View Single Post - B747-400 QRH: "HYD CONTROL 1,4"
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Old 26th Jul 2016, 05:45
  #16 (permalink)  
CCA
 
Join Date: Oct 1999
Location: Up there
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The ultimate gold standard of 744 is

AUX (ACMP) on 1 & 4 (Towing - body gear steering, brakes)
ADP on 1 & 4
ACMP on 2 & 3

The most basic, cheaper, maintain parts commonality with the "classic" is/was

AUX (ACMP) on 4 (brakes)
ADP on 1,2,3 & 4.

Boeing used* to let you customise (added expense to Boeing) however those days are over and the gold standard it is 👍

*Unless you're POTUS, military or just insanely loaded.

The -8.

AUX (ACMP) on 1 & 4 (Towing - body gear steering, brakes)
ADP on 1 & 4
ACMP on 2 & 3
CCA is offline