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DISPLAY - (FIM 31-61-00/101) PANEL - (FIM 31-61-00/101) PANEL - (FIM 31-61-00/101) CONTROL - DH SET CAPT PRIMARY FLIGHT F/O PRIMARY FLIGHT CAPT EFIS CONTROL, M7354 F/O EFIS CONTROL, M7364 EICAS SELECT/FMC SWITCH P2-4  -- 2  CONTROL PANELS, M7354, M7364FLT COMPT, P10 CAPT, F/O EFIS 
RECEIVER/TRANSMITTER - C RAD ALTM, B507  1  1  125B, CTR EQUIP CTR, E9-1  34-33-02 
RECEIVER/TRANSMITTER - L RAD ALTM, B73  1  1  125B, CTR EQUIP CTR, E9-1  34-33-02 
RELAYS - (FIM 32-00-0/101) AIR/GND-C, R769 (PRI), R226 (ALT) AIR/GND-L, R983 (PRI), R7365 (ALT) AIR/GND-R, R768 (PRI), R7366 (ALT) RECEIVER/TRANSMITTER - R RAD ALTM, B74  1 1  125B, CTR EQUIP CTR, E9-1  34-33-02 
UNIT - (FIM 34-61-00/101) L CONTROL DISPLAY R CONTROL DISPLAY C CONTROL DISPLAY SELECTOR SWITCH - DH/MDA  -- 2  CONTROL PANELS, M7354, M7364FLT COMPT, P10 CAPT, F/O EFIS 

* SEE WDM EQUIPMENT LIST
Radio Altimeter System - Component Index
Figure 101

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 34-33-00
 ALL  ú
 ú  01  Page 101
 ú  Feb 18/01 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
FAULT ISOLATION/MAINT MANUAL

P7 PANEL
CAPTAIN'S,
FIRST OFFICER'S EFIS
CONTROL PANELS,
M7354,M7364 (REF)

SEE A

FLIGHT COMPARTMENT
DH (DECISION HEIGHT) SELECT
DH RESET CONTROL
BUTTON
BAROMTRS
DH MDA  IN HPA
RST  STD
VOR APP  PLN MAP  40  80  160 
VOR L  20  320  VOR R 
OFF  CTR  10  640  OFF 
ADF L  ADF R 
WXR  STA  WPT  ARPT  DATA  POS 

CAPTAIN'S, FIRST OFFICER'S
EFIS CONTROL PANELS,
M7354,M7364 (REF)

A

RADIO ALTIMETER LEFT, CENTER, AND RIGHT R/T'S (CENTER EQUIPMENT CENTER, RACK, E9)
RADIO ALTIMETER SEE SHT 2 LEFT, CENTER,
C
AND RIGHT RECEIVE ANTENNAS B76,B546,B78
SEE B
RADIO ALTIMETER
LEFT, CENTER,
AND RIGHT
TRANSMIT ANTENNAS
B75,B545,B77

SEE B
N-TYPE CONNECTOR RIGHT ANGLE N-TYPE ADAPTER
ANTENNA
CABLE

FAIRING PANEL
SCREW 
(SCREW THREADS  TRANSMIT AND RECEIVE ANTENNAS, 
INTO NUTPLATE)  B75,B76,B77,B78,B545,B546 
(4 LOCATIONS)  (6 LOCATIONS) 

RADIO ALTIMETER ANTENNAS (EXAMPLE)
B
Radio Altimeter System - Component Location
Figure 102 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
RADIO ALTIMETER LEFT, CENTER, AND RIGHT RECEIVER/TRANSMITTERS, B73, B507, B74

LEFT, CENTER, RIGHT
RADIO ALTIMETER
RECEIVER/TRANSMITTERS,
B73, B507, B74

Radio Altimeter System - Component Location
Figure 102 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L33752
A
747-400 MAINTENANCE MANUAL
 RADIO ALTIMETER SYSTEM - MAINTENANCE PRACTICES
______________________________________________
 1.  General_______
 A.  This subject contains one task. The task is a radio altitude simulation test.
 TASK 34-33-00-722-307
 2.  Radio Altimeter System Altitude Simulation Test (Using Atlantis Ramp____________________________________________________________________ Test Set DRA-707)_________________
 A.  General
 (1)  
The DRA-707 Ramp Test Set is limited to tests and radio altitude simulation with Collins, TRT or Allidesignal radio altimeter R/Ts with 429 Bus digital output. One set of special test cable(s) is used only with TRT radio altimeter R/Ts. Another set of special test cable(s) is used only with Collins radio altimeter R/Ts. A thrid set of special test cable(s) is used only with Allidesignal Quantum radio altimeter extender boxes.
　
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