(b)
the yellow UNSCHED STAB TRIM light is off
(c)
the UNSCHED STAB TRIM message is not shown on the upper EICAS display unit.
S 985-124
(17)
Push the autopilot wheel disconnect switch twice to disengage the autopilot and cancel the alerts.
S 985-125
(18)
Put the vertical speed dial to 0000.
H. Test Unscheduled Trim Interface
S 985-126
(1)
Operate the control wheel trim switches to put the stabilizer to approximately six units of trim.
S 865-159
(2)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Make sure that the STAB TRIM levers on the control stand panel, P10, are in the neutral position.
S 865-160
(3)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Make sure that the ALTERNATE STAB TRIM switches on the control stand panel, P10, are in the neutral position.
S 285-128
(4)
Make sure that the yellow UNSCHED STAB TRIM light on the overhead panel, P5, is off.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 04 Page 517 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
S 985-206
(5) GUN 051; Put the A/P ENGAGE L switch on the AFCS mode control panel in the CMD position.
S 985-209
(6) GUN 001-050, 052-999; Push the L CMD button on the AFCS mode control panel.
S 865-161
(7)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers forward.
S 865-162
(8)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches forward.
S 285-134
(9)
Make sure that the yellow UNSCHED STAB TRIM light is on.
S 285-135
(10)
Make sure that the UNSCHD STAB TRIM message is shown on the upper EICAS display unit.
S 865-163
(11)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers back to the neutral position.
S 865-164
(12)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches back to the neutral position.
S 285-137
(13)
Make sure that the UNSCHED STAB TRIM light and message are off.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-22-00
ALL ú ú 04 Page 518 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 985-138
(14)
Push the autopilot wheel disconnect switch twice to disengage the autopilot and cancel the alerts.
S 985-139
(15)
Put the computer select switch on the EICAS display select panel in the L position.
S 985-212
(16)
GUN 051; Put the A/P ENGAGE R switch on the AFCS mode control panel in the CMD position.
S 985-215
(17)
GUN 001-005, 052-999; Push the R CMD button on the AFCS mode control panel.
S 865-165
(18)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers aft.
S 865-166
(19)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches aft.
S 285-151
(20)
Make sure that the yellow UNSCHED STAB TRIM light is on.
S 215-178
(21)
Make sure that the UNSCHD STAB TRIM message is shown on the upper EICAS display unit.
S 865-167
(22)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Return the STAB TRIM levers to the neutral position.
S 865-168
(23)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Let the ALTERNATE STAB TRIM switches return to the neutral position.
(24)
Make sure that the UNSCHED STAB TRIM light and message are off.
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