1) Make sure that the elevator moves down. (ad) Push the LSK that is adjacent to <CONTINUE (51.25). (ae) Push the LSK that is adjacent to <CONTINUE (51.26).
 H/O CONDITION?
 1) Make sure that the elevator aligns with the index mark.
 2) Make sure the A/P CHAN B disengages.
 3) Make sure that the CDU displays DO YOU WANT TO INSERT

 ANOTHER? (af) Push the LSK that is adjacent to <NO. (ag) Push the LSK that is adjacent to <CONTINUE (51.26).
 1)  Make sure that the CDU displays ELEV RIG INDEX (51.00) or
 exit BITE. (ah) Push the INIT/REF key. (ai) Remove the hydraulic power systems A and B. (aj) Install the locking bar to lock the isolation valves.
 TASK 27-31-00-745-038
 17. System Test - Sensors Null (with the DFCS Computer BITE)
________________________________________________________
 A.  Special Tools and Equipment
 (1)  
F80055-1 - Trammel Bar

 B.  
Standard Tools and Equipment

 (1)  
Voltmeter - General Purpose VTVM

 C.  
References

 (1)  
AMM 27-31-00/201, Elevator and Tab Control System

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 D.  Access
 (1)  
Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
 711 Elevator and Tab, LH
 712 Elevator and Tab, RH

 E.  
Procedure

 S 865-066
 (1)
Use the trammel bar to set the B dimension at 41.57 |0.05 inches

 S 865-067

 (2)  
Do this task: "Null Procedure - Mach Trim Actuator" (AMM
 27-31-00/201).

 S 745-039

 (3)  
Do a test of the sensors null with the DFCS computer BITE:

 (a)  
Push the INIT/REF key on FMCS CDU.

 (b)  
Push the line select key (LSK) that is adjacent to <INDEX.

 (c)  
Push the LSK that is adjacent to MAINT>.

 (d)  
Push the LSK that is adjacent to <DFCS.

 (e)  
Push the NEXT PAGE key on the CDU to select page 2.

 (f)  
Push the LSK that is adjacent to <RIGGING.

 (g)  
Push the LSK that is adjacent to <CONTINUE (50.00).

 (h)  
Push the LSK that is adjacent to <ELEVATOR (50.00).

 (i)  
Push the LSK that is adjacent to <CONTINUE (51.00).

 (j)  
Push the LSK that is adjacent to <ELEV RIG (51.00). 1) Make sure a display of the PRESSURIZE HYD SYS A-B is on the

 CDU.
 2) Do the steps shown on the CDU.

 (k)  
Push the LSK that is adjacent to <CONTINUE (51.00). 1) Make sure a display of the SET STABILIZER B DIMEN TO 41.57

 (+/-0.01) IN. (3.0 UNITS) is on the CDU. 2) Do the step shown on the CDU.

 (l)
Push the LSK that is adjacent to <CONTINUE (51.01).

 (m)  
Push the LSK that is adjacent to <CONTINUE (51.02). 1) Make sure a display of the JIGGLE COLUMN/WHEEL is on the CDU. 2) Adjust the control column to put the system in the center position.

 3)  Make sure that the trailing edge of the right elevator aligns with the index mark on the tail cone in |0.06 inch.

 (n)
Push the LSK that is adjacent to <CONTINUE (51.02).

 (o)
Push the LSK that is adjacent to <CONTINUE (51.03).

 (p)
Push the LSK that is adjacent to <CONTINUE (51.04).

 1)  Make sure a display of the ENGAGE A/P A TO CMD is on the CDU. a) Engage the A/P CHAN A. b) Make sure that elevator does not move.
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 2) Make sure a display of the ENGAGE A/P B TO CMD is on the CDU.
　
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