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doors. For a detailed description of <strong>the</strong> hydraulic<br />

system, please see "Megafortress Briefing:<br />

Hydraulic System,".<br />

.<br />

If engines 1,3,4,5,6 or 7 is off, its hydraulic pump is<br />

also off (engines 2 and 8 do not have hydraulic<br />

pumps.) this results in <strong>the</strong> following conditions:<br />

1) The PUMP OUT light goes ON.<br />

2) The COPLT light on <strong>the</strong> Interphone Panel flashes<br />

at all o<strong>the</strong>r stations.<br />

3) The "H" warning light flashes at <strong>the</strong> pilot's station.<br />

4) If an engines 1,4,5, or 7 cannot be restarted, <strong>the</strong>ir<br />

electric standby pumps can be turned on by selecting<br />

<strong>the</strong> corresponding STDBY switch.<br />

5) Pumps for engines 3 and 6 operate <strong>the</strong> inboard<br />

spoilers. If 3 and 6 <strong>are</strong> out, plane loses longitudinal<br />

roll capability. i.e.-it won't turn as fast.<br />

6) Pumps for engines 1 and 7 operate <strong>the</strong> outboard<br />

spoilers. If 1 and 7 <strong>are</strong> out, <strong>the</strong> plane loses more<br />

longitudinal roll capability.<br />

7) Pumps for engines 4 and 5 operate <strong>the</strong> landing<br />

gear and ground brakes. If 4 and 5 <strong>are</strong> out and <strong>the</strong>ir<br />

standby pumps cannot be turned on, emergency<br />

electrical backup power for <strong>the</strong> standby pumps may<br />

be available through <strong>the</strong> copilot's EVS operating in<br />

INT mode (see below). If supplying emergency<br />

power does not work, <strong>the</strong> pumps <strong>are</strong> damaged beyond<br />

repair.<br />

Rudder/Elevator Hydraulics<br />

Each of <strong>the</strong> two rudders on <strong>the</strong> plane's V-tail has its<br />

own system and backup.<br />

1) At least one must be turned on for <strong>the</strong> plane to<br />

turn or pitch up or down.<br />

2) If one rudder goes out due to excessive damage or<br />

<strong>the</strong> copilot turning it off, <strong>the</strong> plane gets harder to<br />

control.<br />

3) If both rudders <strong>are</strong> out-best of luck.<br />

Batteries<br />

Note<br />

Two electrical distribution buses supply power to <strong>the</strong><br />

left and right sides of <strong>the</strong> aircraft. Primary power is<br />

supplied by four engine-driven generators and<br />

constant-speed drives mounted on engines 1,3,5 and<br />

13

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