(3)  
Data will be provided by the center ADC when it is used as an alternate source for either the left or right ADC.

 D. Yaw Damper System (Ref 22-21-00)
 (1)  
Components of the yaw damper system that interface with the air data system are the:

 (a)  
Upper yaw damper module (UPR YDM)

 (b)  
Lower yaw damper module (LWR YDM)

 (2)  
The yaw damper system receives digital data from the left and right ADCs on data bus No. 1 and data bus No. 4. The left ADC serves as the primary source for the upper YDM and the alternate source for the lower YDM. The right ADC serves as the primary source for the lower YDM and the alternate source for the upper YDM.

 (3)  
Data will be provided by the center ADC when it is used as an alternate source for either the left or right ADC.

 E. Automatic Stabilizer Trim System (22-22-00)
 (1)  Components of the automatic stabilizer trim system that interface with the air data system are the:
 (a)  
Left stab trim/rudder ratio module (L-SRM)

 (b)  
Right stab trim/rudder ratio module (R-SRM)

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 34-12-00
 ALL  ú ú 04 Page 10 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
The automatic stabilizer trim system receives digital data from the left and right ADCs on data bus No. 1 and data bus No. 4. The left ADC serves as the primary source for the left SRM and the alternate source for the right SRM. The right ADC serves as the primary source for the right SRM and the alternate SOURCE for the left SRM.

 (3)  
Data will be provided by the center ADC when it is used as an alternate source for either the left or right ADC.

 F. Passenger Flight Information Display System (Ref 23-38-00)
 (1)  The digital interface unit (DIU) of the passenger flight information display system interfaces with the the air data system.
 (a) The passenger flight information display system receives digital data from the right ADC on data bus No. 2.
 G. Trailing Edge Flap System (Ref 27-51-00)
 (1)  
Components of the trailing edge flap system that interface with the air data system are the:

 (a)  
Left flap control unit (L-FCU)

 (b)  
Right flap control unit (R-FCU)

 (c)  
Center flap control unit (C-FCU)

 (2)  
The trailing edge flap control system receives digital data from the left and right ADCs on data bus No. 1 and data bus No. 4. The left ADC serves as the primary source for the left FCU and the alternate source for the right and center FCUs. The right ADC serves as the primary source for the right and center FCUs and the alternate for the left FCU.

 (3)  
Data will be provided by the center ADC when it is used as an alternate source for either the left or right ADC.

 H. Aircraft Condition Monitoring System (Ref 31-35-00)
 (1)  The data management unit (DMU) of the aircraft condition monitoring system interfaces with the the air data system.
 (a)  The aircraft conditioning and monitoring system receives digital data from each ADC on data bus No. 4.
 I. Aural Warning System (Ref 31-51-00)
 (1)  
The modular avionics and warning electronics assembly (MAWEA) of the aural warning system interfaces with the the air data system.

 (2)  
The aural warning system receives digital data from the left and right ADCs on data bus No. 1 and data bus No. 2.

 (3)  
Data will be provided by the center ADC when it is used as an alternate source for either the left or right ADC.

 J. Integrated Display System (IDS) (Ref 31-61-00)
 (1)  
Components of the IDS that interface with the air data system are the:

 (a)  
EFIS control panel

 (b)  
EFIS/EICAS interface unit

 (c)  
Primary Flight Display (PFD)

 (d)  
Main and auxiliary EICAS displays

 (2)  
Electronic flight instrument system (EFIS) control panel

 (a)  
The EFIS control panel control panel controls that are used with the air data system are the meters (MTRS) button and the baro set control.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 導航 NAVIGATION 1(86)