747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(88)

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 (5)  Pressurize the auxiliary pitot static systems No. 1 and 2 to 1.00 + 1.00/-0.00 psi (or 204 +80/-0 knots IAS. Note:reference static pressure to ambient pressure.)(Ref 34-11-00/201)
 NOTE: This is to make sure the control column returns to the center
____ detent after movement as well to provide increased column force to simulate higher airspeeds.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-094
 (6)  
Set the horizontal Stabilizer to 5 units of trim (AMM 27-41-00/201).

 D.
Do a Test of the Elevator Feel Computer

 S 712-040
 (1)  
Move the control column from the center detent slowly to the full aft position and make sure these conditions occur:

 (a)  
The force increases while the control column moves away from the neutral.

 (b)  
The breakout force is approximately 8.6 pounds.

 (c)  
The force is at 72-106 pounds when the control column is in the aft position.

 S 862-042
 (2)  
Let the control column returns to the neutral position.

 S 862-043

 (3)  
Hold the STAB TRIM ALTN switches on the control stand to the APL NOSE UP position.

 S 712-044

 (4)  
Move the control column slowly to the full aft position and make sure these conditions occur:

 (a)
The breakout force is approximately same as in step (1).

 NOTE: The force increases at a lesser rate than in step (1).
____
 (b)  The force is at 40-55 pounds when the control column is at the full aft position.
 S 862-079
 (5)  
Set the horizontal stabilizer to the neutral rig position
 (AMM 27-41-00/201).

 S 862-080

 (6)  
Release the pressure in the auxiliary pitot systems No. 1 and No. 2 (AMM 34-11-00/201).

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 ALL  ú ú 01 Page 210 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 742-049
 (7)  
Do the CMCS AFDS - Ground Test - SERVO-ELEVATOR (AMM 22-10-00/501).

 (a)  
Make sure that CMCS - AFDS Ground Test - SERVO-ELEVATOR operates correctly.

 S 862-060
 (8)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6, Main Power Distribution Panel
 1) 6E1, FLAP CONT PRI TE AC
 2) 6E2, FLAP CONT PRI TE DC
 3) 6L19, TE FLAP ELEC CONT OTBD
 4) 6L20, TE FLAP ELEC CONT INBD

 (b)  
P415, Power Distribution Center - Right Panel 1) 415A32, TE FLAP ELEC INBD 2) 415M38, TE FLAP ELEC OTBD

 S 792-052
 (9)  
Examine the hydraulic connections for leaks.

 S 792-053

 (10)
 Examine the pitot connections for leaks (AMM 34-11-00/201).

 TASK 27-31-14-002-054
 6.  Elevator Feel Computer Filter Removal (Fig. 201)_____________________________________
 A. Standard Tools and Equipment
 (1)  
Bucket - 1 gallon capacity (for hydraulic fluid)

 B.
References

 (1)  
AMM 06-09-05/201, Body Section 48 Access Doors and Panels

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AIPC 27-31-14, Fig. 5

 C.
Access

 (1)  
Location Zone
 311 Area Aft of Pressure Bulkhead, LH
 312 Area Aft of Pressure Bulkhead, RH

 

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