(a)
Move the alternate stab trim switches full forward and hold. 1) Make sure that the stabilizer leading edge moves up.
(b)
Let the alternate stab trim switches go to the neutral position.
S 865-749
(10)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to CUTOUT.
S 865-750
(11)
Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 715-902
(12)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer operates correctly for the RIGHT STAB TRIM SHUTOFF switch at the CUTOUT position and the CENTER STAB TRIM SHUTOFF switch at the NORM position:
(a)
Move the STAB TRIM control levers full aft and hold. 1) Make sure that the stabilizer leading edge moves down.
(b)
Let the STAB TRIM control levers go back to neutral position.
S 715-903
(13)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer operates correctly for the RIGHT STAB TRIM SHUTOFF switch at the CUTOUT position and the CENTER STAB TRIM SHUTOFF switch at the NORM position:
(a)
Move the alternate stab trim switches full aft and hold. 1) Make sure that the stabilizer leading edge moves down.
(b)
Let the alternate stab trim switches go back to the neutral position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 525 ú Sep 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-751
(14)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to NORM.
L.
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Manual-Mechanical Stabilizer Trim Control Test
S 865-100
(1)
Make sure the right hydraulic system is pressurized
(Ref 29-11-00/201).
S 215-101
(2)
Make sure that electrical power is supplied (Ref 24-22-00).
S 865-752
(3)
Move the STAB TRIM control levers full forward and full aft.
S 215-889
(4)
Make sure that the stabilizer moves smoothly and freely through full travel.
S 865-753
(5)
Move only the left STAB TRIM control lever forward.
(a)
Make sure that the stabilizer does not move.
S 865-754
(6)
Move only the right STAB TRIM control lever forward.
(a)
Make sure that the stabilizer does not move.
S 865-755
(7)
Move only the left STAB TRIM control lever aft.
(a)
Make sure that the stabilizer does not move.
S 865-756
(8)
Move only the right STAB TRIM control lever aft.
(a)
Make sure that the stabilizer does not move.
S 865-757
(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.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 526 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-758
(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 865-759
(11)
Move the STAB TRIM control levers to neutral at the same rate.
(a)
Make sure that the stabilizer does not move.
TASK 27-41-00-735-B52
3. Electrical Travel Limits and Stabilizer Trim Cutoff Switch Tests________________________________________________________________
NOTE: This is a scheduled maintenance task.
____
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