(a)  
Push the PREVIOUS or NEXT PAGE key as necessary to show the logic conditions of label 270/00.

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 32-61-00
 ALL  ú ú 04 Page 558 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (b)  
Make sure the CDU shows shows the bit status of label 270/00 as follows:

 ~............................................................ | Sensor and Bit Location | Bit State | Description | .............................................................. |L Body Tilt on Bit 19 | 0 |NOT TILTED | .............................................................. |L Wing Tilt on Bit 20 | 0 |NOT TILTED | .............................................................. |R Wing Tilt on Bit 22 | 0 |NOT TILTED | .............................................................. |R Body Tilt on Bit 23 | 0 |NOT TILTED | 2...............................…..............….............1

 (c)  
Push the PREVIOUS or NEXT PAGE key as necessary to show the logic conditions of label 272/00.

 (d)  
Make sure the CDU shows shows the bit status of label 272/00 as follows:

 ~............................................................ | Sensor and Bit Location | Bit State | Description | .............................................................. |L Body Tilt on Bit 19 | 0 |NOT TILTED | .............................................................. |L Wing Tilt on Bit 20 | 0 |NOT TILTED | .............................................................. |R Wing Tilt on Bit 22 | 0 |NOT TILTED | .............................................................. |R Body Tilt on Bit 23 | 0 |NOT TILTED | 2...............................…..............….............1
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 04 Page 559 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 G. Do a Test of the Primary Sensors (Fig. 502)
 S 045-281
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE SPEED
_______ BRAKES. THIS PROCEDURE CAN CAUSE THE SPEED BRAKES TO OPERATE. THE ACCIDENTAL OPERATION OF THE SPEED BRAKES CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO PREPARE
_______ THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE. FAILURE TO DO THE STEPS CORRECTLY CAN CAUSE THE AUTOMATIC OPERATION OF AIRPLANE SYSTEMS. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  Do this task: "Prepare Safety-Sensitive Systems for the Air Mode" (AMM 32-09-02/201).
 NOTE:____It is not necessary to do this task: "Put the air/ground relay system in the air mode".
 S 095-270
 (2)  
Remove the ground lockpins from the landing gear (AMM 09-11-00/201).

 S 585-269

 (3)  
Lift the airplane on jacks (AMM 07-11-01/201).

 S 865-273

 (4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7F23 LANDING GEAR DSP & CONT ALTN
 2) 7F26 PSEU SECT 2

 S 865-277
 (5)  
Move the landing gear lever from the OFF to the DN position.

 (a)  
Make sure all the landing gear are down and the gear doors are closed.

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 32-61-00
 ALL  ú ú 07 Page 560 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 (b)

(c)

A
747-400
MAINTENANCE MANUAL

Push the PREVIOUS or NEXT PAGE key as necessary to show the
 logic conditions of label 270/00.
　
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