757 MAINTENANCE MANUAL
S 865-937
(6)
Move only the right STAB TRIM control lever forward.
(a)
Make sure that the stabilizer does not move.
S 865-938
(7)
Move only the left STAB TRIM control lever aft.
(a)
Make sure that the stabilizer does not move.
S 865-939
(8)
Move only the right STAB TRIM control lever aft.
(a)
Make sure that the stabilizer does not move.
S 865-940
(9)
Move the STAB TRIM control levers, full travel in opposite directions, at the same rate.
(a)
Make sure that the stabilizer does not move.
S 865-941
(10)
Move each control lever to the opposite position. The control levers should pass through neutral at the same time.
(a)
Make sure that the stabilizer does not move.
S 865-942
(11)
Move the STAB TRIM control levers to neutral at the same rate.
(a)
Make sure that the stabilizer does not move.
S 865-658
(12) Remove the power from the right hydraulic system (Ref 29-11-00/201).
TASK 27-41-00-715-647
9. Stabilizer Trim Override Capability with Split Control Column Commands Test
___________________________________________________________________________
NOTE: This is a scheduled maintenance task.
____
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 580Q ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
A. References
(1)
24-22-00/201, Electrical Power - Control
(2)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Stabilizer Trim Override Capability with Split Control Column Commands Test
S 865-660
(1) Supply electrical power (Ref 24-22-00/201).
S 865-659
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES
_______ WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(2)
Pressurize the right and center hydraulic systems
(Ref 29-11-00/201).
S 865-943
(3)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to CUTOUT.
S 865-944
(4)
Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 865-946
(5)
Push the captain's control column full forward and hold in position. At the same time, pull the first officer's control column full aft and hold in position.
S 865-947
(6)
Move the captain's or first officer's stabilizer-trim control-wheel-switches up (airplane nose down).
(a)
Make sure that the stabilizer leading edge moves up.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 580R ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(7) S 865-949Release the stabilizer-trim control-wheel-switches.
(8) S 865-951With the control columns still split, move the captain's or first officer's stabilizer-trim control-wheel switches down (airplane nose up). (a) Make sure that the stabilizer leading edge moves down.
(9) S 865-953Release the stabilizer-trim control-wheel-switches.
S 865-B25
(10)
Push the first officer's control column full forward and hold in position. At the same time, pull the captain's control column full aft and hold in position.
S 865-B26
(11)
Move the captain's or first officer's stabilizer-trim control-wheel switches up (airplane nose down).
(a)
Make sure that the stabilizer leading edge moves up.
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