757 AMM 飞机维护手册 自动飞行 AUTOFLIGHT 1(57)

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 S 862-298
 (4) Put the airplane back to its usual condition if no other ground
 tests are necessary. AM. 69 RUD SURF LIM
 NOTE: The Rudder Ratio Changer must be in the Low Speed
____ position and the rudder in neutral for this test. The Rudder is at neutral when the two sides of the rudder trailing edge are aligned within the rudder index plate groove.
 S 862-167
 (1)  Do the "Prepare to Test" steps.
 S 982-168
 WARNING: LOCK THE NOSE GEAR STEERING WHEN ANY RUDDER MOVEMENT IS
_______ SCHEDULED TO PREVENT INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Move the towing lever on the nose gear metering valve module to the TOW POSITION.

 (3)  
Install the nose gear steering valve lockpin (Ref 09-11-00).

 S 432-169
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 S 862-196
 WARNING:_______ KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
 HYDRAULIC POWER IS SUPPLIED.  AILERONS, ELEVATORS, RUDDER,
 FLAPS, SLATS, SPOILERS, ADN STABILIZER ARE FULLY POWERED
 SURFACES.  INJURY OR DAMAGE CAN OCCUR WHEN HYDRAULIC POWER IS

 SUPPLIED.
 (4)  
Do the "Supply Hydraulic Power" steps.

 S 742-170

 (5)  
Do MCDP test 69.

 NOTE: The MCDP shows FCC # FAIL for a FCC that had a self-test
____ failure when it went into GRD TEST MODE. The MCDP shows FCC interface faults related to the rudder autopilot servos. The MCDP shows messages to make sure the hydraulic power is on, the rudder trim is set to zero, and that all three A/P channels are engaged in command. The MCDP then moves the rudder servo to the positive limit and shows the rudder surface position in degrees for each channel. The same is done for the negative limit. Refer to Fig. 202 for the limit parameters.
 S 862-299
 (6)  Put the airplane back to its usual condition if no other ground
 tests are necessary. AN. Put the Airplane Back to Its Usual Condition
 S 032-172
 WARNING: STAY AWAY FROM THE NOSE GEAR WHEELS WHEN THE LOCKPIN IS REMOVED
_______ THE NOSE WHEEL CAN MOVE QUICKLY TO THE CENTER POSITION. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Make sure the nose gear wheels are centered and remove the nose gear steering valve lockpin.

 S 862-197

 (2)  
Make sure the towing lever goes to the NORMAL POSITION.

 (3)  
Set the MCDP to OFF.

 (4)  
Remove the remote MCDP control unit if it is installed.

 S 982-173
 S 082-174
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757 MAINTENANCE MANUAL
 (5)  S 862-305On the P5 panel, set the L and R ENG LIMITER switches on the ENGINE START/RAM AIR TURB control panel to OFF.
 (6)  S 862-213GUN 001-003 WITHOUT SB 73-18; On the P10 panel, set the L and R ELEC ENG CONTROL switches on the FUEL CONTROL panel to OFF.
 (7)  S 862-209GUN 001-003 WITH SB 73-18; GUN 004-999; On the P5 panel, set the L and R ELEC ENG CONTROL switches to OFF.
 (8)  S 862-198Remove hydraulic power if is not necessary (AMM 29-11-00/201).
 (9)  S 862-199Remove electrical power if it is not necessary (AMM 24-22-00/201).

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757 MAINTENANCE MANUAL
 AUTOPILOT (FLIGHT CONTROL) - DESCRIPTION AND OPERATION
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