S 865-044

 (9)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to NORM.

 S 865-045

 (10)
 Move both of the STAB TRIM control levers aft full travel.

 (a)  
Make sure that the stabilizer moves in the airplane nose up direction (stabilizer leading edge down).

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757 MAINTENANCE MANUAL
 S 865-046
 (11)
 Release both of the STAB TRIM control levers.

 (a)  
Make sure that the stabilizer movement stops.

 S 865-047
 (12)
 Move both of the STAB TRIM control levers aft full travel and hold until the travel limit mechanism cancels the lever input. (When the limit mechanism cancels, a sudden increase in force is necessary to hold the left lever aft.)

 S 865-048

 (13)
 Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to CUTOUT.

 S 215-049

 (14)
 Make sure that the lower stop surfaces on the stabilizer trim ballscrew actuator have not hit each other.

 S 215-050

 (15)
 Make sure that both stabilizer trim position indicators show

 15.5 | 1/4 units of trim.
 G.  AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Alternate-Electric Operation and Travel Limits Test
 S 215-542
 (1)  
Make sure that the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel are at the NORM position.

 S 215-543

 (2)  
Make sure that the right and center hydraulic systems are
 pressurized (Ref 29-11-00).

 S 865-544

 (3)  
Move the alternate stab trim switches forward.

 (a)  
Make sure that the stabilizer moves in the airplane nose down direction (stabilizer leading edge up).

 S 865-642
 (4)  
Release the alternate stab trim switches.

 (a)  
Make sure that the stabilizer movement stops.

 S 865-545
 (5)  
Move the alternate stab trim switches forward and hold until the stabilizer stops.

 S 865-546

 (6)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to the CUTOUT position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A

757
MAINTENANCE MANUAL

 S 215-547
 (7)  
Make sure that the upper stops of the stabilizer ballscrew actuator have not hit each other.

 S 225-548

 (8)  
Make sure that both stabilizer trim position indicators show

 0.20 | 0.25 units of trim.
 S 865-549
 (9)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to the NORM position.

 S 865-550

 (10)
 Move the alternate stab trim switches aft.

 (a)  
Make sure that the stabilizer moves in the airplane nose up direction (stabilizer leading edge down).

 S 865-551
 (11)
 Release the alternate stab trim switches.

 (a)  
Make sure that the stabilizer movement stops.

 S 865-552
 (12)
 Move the alternate stab trim switches aft and hold until the stabilizer stops.

 S 865-553

 (13)
 Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to the CUTOUT position.

 S 215-554

 (14)
 Make sure that the lower stop surfaces on the stabilizer ballscrew actuator have not hit each other.

 S 225-555

 (15)
 Make sure that both stabilizer trim positions indicators show

 15.30 | 0.25 units of trim.
 H.  AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Manual Override Operation Test
　
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