*
Angle of attack in degrees
*
CAS in knots
*
ADIRU pitch rate in degrees per second
EFFECTIVITY
BEJ ALL
* ACE pitch rate in degrees per second for each ACE.
Directly below, the page shows the column, wheel and pedal position for the captain’s and the first officer’s controls. The position shows the displacement, in inches, of each LVDT.
The page then shows the column and wheel force for the captain’s and the first officer’s controls. The indication shows the force in lb.
The speedbrake lever position is in degrees of RVDT rotation for each of the four RVDTs.
The rudder trim and elevator feel show the actuator extension in inches. Rudder trim position 1 refers to the rudder trim actuator position RVDT. Position 2 refers to the rudder trim position transducer. Elevator feel position 1 refers to the left feel actuator position. Position 2 refers to the right feel actuator.
The gust suppression differential pressure is in psid.
An X shows next to the indication if any of the above position, force or pressure transducer signals is invalid.
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PFCS -INDICATIONS -MAINTENANCE PAGE -CONTROLS AND VARIABLES
The lower part of the page shows the PFCS mode of operation and the autopilot engagement status. Up to three protection mode activity messages can show at the lower right of the page. These messages will only show if they are active and they will show in this priority order:
*
TAC
*
Stall protection
*
Bank angle protection
*
Overspeed protection
*
Flare compensation.
The NORMAL or SECONDARY messages show if the PFC is in the normal or secondary mode. When the PFCS is in direct mode, the PFC mode shows SECONDARY.
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PFCS -INDICATIONS -MAINTENANCE PAGE -CONTROLS AND VARIABLES
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PFCS -INDICATIONS -MAINTENANCE PAGE -SURFACE POSITION
General
The second PFCS maintenance page contains surface position information and actuator hydraulic data.
The graphic shows the maintenance page in auto event mode caused by a stabilizer fault.
Hydraulic System Pressure
The hydraulic pressure for each of the three systems shows in psi.
If a hydraulic system signal is invalid, the field is blank.
Surface Position
The surface position is in inches of displacement of the LVDT of each PCU. Surface position data shows for:
*
Spoilers
*
Flaperons
*
Ailerons
*
Rudder
*
Elevators.
The stabilizer position is in degrees of rotation of the RVDT of each stabilizer position module.
Differential Pressure Indication
PCU FORCE shows the flaperons actuator force in pounds. DELTA PRESS shows the differential pressure across the PCU actuator piston. The data shows in psi for the rudder and the elevators.
Failure Indications
When a PCU is shutdown, an amber S shows adjacent to the surface position indication.
If a PCU position signal is invalid, an amber X shows adjacent to the surface position indication or adjacent to the S if the PCU is also shutdown.
When the stabilizer position signal is invalid, an amber X shows adjacent to the stabilizer position.
An amber SR or SC shows adjacent to the stabilizer position indication if there is a shutdown of either the right or center STCM.
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PFCS -INDICATIONS -MAINTENANCE PAGE -SURFACE POSITION
EFFECTIVITY BEJ ALL 27-02-00
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D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
THIS PAGE IS INTENTIONALLY LEFT BLANK
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Page 76 D633W101-BEJ Sep 05/2002
PFCS -INDICATIONS -MAINTENANCE PAGE -ANALOG DISCRETES
General
The third PFCS maintenance page contains the status of analog discretes. Normal indications are white. Failure indications are amber.
The graphic shows the maintenance page in auto event mode caused by a stabilizer fault.
ACE Discrete Indications
For each of the four ACEs, the page shows the status of the discrete signals.
The FSEU trailing edge and leading edge retracted signal shows as a YES or NO. If the signal is defective, the field becomes blank.
The PFC disconnect switch position status shows as AUTO or DISC. If the switch signal is invalid, OPEN or CLOSED shows in amber if the contacts are defective in the open or closed position. If the switch is defective and does not supply a signal, the field is blank.
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本文链接地址：777 AMM 飞机维护手册 飞行操纵 Flight Controls 1(15)
