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MAINTENANCE MANUAL
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OUTBOARD PCA REACTIONLINK INBOARD PCA
AILERONHINGE QUADRANT FOLLOW UP
LINKAGE PILOTS' INPUTTO PCA
FIRST OFFICER WHEEL
AILERON POSITIONCOMMAND TRANSDUCER
TRANSMITTERFORCE LIMITER
UNIT ROD (INTERNAL (SPOILER CONTROL) PCA OVERRIDE
SPRING) MECHANISM
RIGHT AILERON(LEFT AILERONSIMILIAR)
CAPTAINS WHEELCOMMAND TRANSDUCERUNIT AILERONTRIMACTUATOR LEFT AUTOPILOTLATERAL CONTROLSERVO(ALCS) FWD WHEELWELL BULKHEADPRESSURE SEALS
RIGHT AUTOPILOTFEEL, CENTERING,
LATERAL CONTROLAND TRIM
SERVO (ALCS)MECHANISM
CENTER AUTOPILOTLATERAL CONTROL
TO LEFT AILERON SERVO (ALCS)
(SAME AS RIGHT AILERON)
Aileron Control System Schematic (Mechanical)Figure 8
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MAINTENANCE MANUAL
LEFT HYDRAULIC SYSTEM
TO OTHER L HYD PWRD SYSTEMS
LEFT AUTOPILOT LATERAL CONTROL (ALCS)
RIGHT
AUTOPILOT
LATERAL
SERVO (ALCS) TO OTHER
R HYD
PWRD
SYSTEMS
NOTES: RETURN PRESSURE
PILOT
INPUT
SHUTTLE VALVE CONTROL VALVE
ACTUATOR TO AILERON
CONTROL
RIGHT AILERON OUTBOARD POWER CONTROL ACTUATOR (PCA)
RIGHT SYSTEM HYDRAULIC SYSTEM HYDRAULIC CENTER
SERVO (ALCS) CENTER LATERAL AUTOPILOT
OUTBOARD PCA OUTBD PCA AILERON SAME AS R INTERNALS LEFT AILERON OUTBD PCA AILERON SAME AS R INTERNALS
INBOARD PCA LEFT AILERON
Aileron Control System Schematic (Hydraulic)
Figure 9
TO OTHER CENTER HYD PWRD SYSTEMS
INTERNALS
SAME AS R
AILERON
OUTBD PCA
RIGHT AILERON INBOARD PCA
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MAINTENANCE MANUAL
AFT ELECTRONIC CONTROL PNL
Aileron Control System Schematic (Electrical)
Figure 10
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MAINTENANCE MANUAL
B. Control
_______
(1)
Provide electrical power (Ref 24-22-00).
(2)
Check that EICAS circuit breakers on overhead circuit breaker panel P11 are closed (6 places).
(3)
Press STATUS button on pilot's display select panel P9 to display control surface position indicator on lower EICAS display unit.
WARNING: TO PREVENT INJURY OR DAMAGE, CLEAR PERSONNEL AND EQUIPMENT
_______ FROM CONTROL SURFACES BEFORE PROVIDING HYDRAULIC POWER. KEEP AREA CLEAR WHEN OPERATING CONTROL SURFACES.
(4)
Provide left, center, and right hydraulic system power (Ref
29-11-00).
(5)
Aileron operation (lateral control wheel)
(a)
Rotate either control wheel in clockwise direction. Left aileron will move down and right aileron will move up.
(b)
Rotate either control wheel counterclockwise. Left aileron will move up and right aileron will move down.
(c)
Place control wheels in neutral position.
(6)
Aileron operation (aileron trim actuator)
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