(a)
Move the alternate stab trim switches forward to move the stabilizer in the AIRPLANE NOSE DOWN direction (stabilizer leading edge up).
(b)
Move the alternate stab trim switches aft to move the stabilizer in the AIRPLANE NOSE UP direction (stabilizer leading edge down).
Restore Airplane to Normal
(a)
Remove right and center systems hydraulic power (AMM 29-11-00/201).
(b)
Remove electrical power (AMM 24-22-00/201).
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FAULT ISOLATION/MAINT MANUAL
HORIZONTAL STABILIZER TRIM CONTROL SYSTEM
* SEE THE WDM EQUIPMENT LIST
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STANDAIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND
Horizontal Stabilizer Trim Control System - Component Index
Figure 101 (Sheet 1)
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COMPONENT FIG. SHT 102 QTY ACCESS/AREA REFERENCE
SWITCH - ALTERNATE STAB TRIM, S10580 2 2 1 FLIGHT COMPARTMENT, P10 PANEL 27-41-03
SWITCH - MANUAL STAB TRIM, S80,S81 1 2 WHEELS FLIGHT COMPARTMENT, CONTROL 27-41-01
SWITCH - STAB TRIM BRAKE PRESSURE, YB4S1, 4,5 2 311AL, AFT FUSELAGE, STABILIZER *
YB5S1 TRIM CONTROL MODULES, M211,M212
SWITCH - STAB TRIM CUTOFF, S334,S335,S337, 3 8 113AL, FORWARD EQUIPMENT CENTER,
S338,S10234,S10235,S10236,S10237 CONTROL COLUMNS BASE
SWITCH - STAB TRIM SHUTOFF CENTER, S5 2 1 FUEL CONTROL PANEL, M73 FLIGHT COMPARTMENT, P10 PANEL, *
SWITCH - STAB TRIM SHUTOFF RIGHT, S6 2 1 FUEL CONTROL PANEL, M73 FLIGHT COMPARTMENT, P10 PANEL, *
SWITCH - STAB TRIM STANDBY, S538 1 1 1 FLIGHT COMPARTMENT, P10 PANEL 27-41-15
SWITCHES - (29-31-00/101)
HYD SYST C - ACMP PRESS, S10002
HYD SYST R - ACMP PRESS, S32
UNIT - (27-51-00/101)
FLAP/SLAT ELECTRONIC, M10331,M10333
* SEE THE WDM EQUIPMENT LIST
Horizontal Stabilizer Trim Control System - Component Index
Figure 101 (Sheet 2)
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FAULT ISOLATION/MAINT MANUAL
PANEL, P10 SEE
FLIGHT COMPARTMENT
STABILIZER TRIM STANDBY SWITCH, S538
MANUAL STABILIZER TRIM SWITCH, S80,S81
CONTROL WHEEL
CONTROL STAND - RIGHT SIDE
(EXAMPLE)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND
Horizontal Stabilizer Trim Control System - Component Location Figure 102 (Sheet 1)
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FAULT ISOLATION/MAINT MANUAL
STAB TRIM
LEVERS
ST TR AI BM
STABILIZER TRIM
POSITION INDICATOR, N69
STABILIZER TRIM
NORM
POSITION INDICATOR, N68
CUT OUT
CR STAB TRIM
FUEL CONTROLSTABILIZER TRIM
STABILIZER TRIM
PANEL, M73SHUTOFF CENTER
SHUTOFF RIGHT
SWITCH, S5
SWITCH, S6
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