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 NOTE: You must put in a +, -, / or a decimal point where
____ necessary to correctly put in the performance factor.
 The valid entries for THR RED are from 399 to 9,999.
 Flaps 5 is entered by putting "5" into the scratch pad. Do not enter the word "FLAPS".
 The performance code corresponds to program pin wiring.
 (b)  Push the LSK adjacent to the applicable field to set the value in that field.
 TASK 34-61-00-472-103
 5. FMC Navigational Database Crossload
____________________________________
 A. General
 (1)  This task tells you how to crossload the navigational database software into the other FMC.
 B. Access
 (1)  Location Zone
 221 Control Cabin, LH
 222 Control Cabin, RH

 C. Procedure
 S 842-122
 (1)  Make sure these circuit breakers are closed:
 (a)  P7 Overhead Circuit Breaker Panel
 1) 7C1, FMCS FMC L
 2) 7C23, FMCS FMC R

 S 842-123
 (2)  
Make sure the Captain's Nav Source Select Switch is in the FMC-L position.

 S 842-124

 (3)  
Make sure the First Officier's Nav Source Select Switch is in the FMC-R position.

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 S 842-125
 (4)  
Make sure the NAV DATA CROSSLOAD page shows on the CDU for the FMC that is to receive the navigational database.

 S 842-126

 (5)  
Show the NAV DATA CROSSLOAD page on the other CDU:

 NOTE: The left and right CDUs must show the NAV DATA CROSSLOAD
____
 page.

 (a)  
Push the INIT/REF key.

 (b)  
Push the LSK adjacent to the <INDEX prompt to show the INIT/REF INDEX page.

 (c)  
Push the LSK adjacent to the MAINT> prompt to show the MAINTENANCE INDEX page.

 (d)  
Push the LSK adjacent to the <CROSSLOAD prompt to show the NAV DATA CROSSLOAD page.

 S 842-127
 (6)  Arm the NAV DATA CROSSLOAD page shown on each CDU.
 (a)  
Push "A", "R" and "M" to show "ARM" in the CDU scratchpad.

 (b)  
Push the LSK adjacent to the field that shows "___" to show "ARM" in the field.

 S 472-128
 (7)  Do these steps to crossload the navigational database software:
 (a)  Set the FMC master switch on the P2 pilot's center instrument panel to the same position as the FMC that transmits the data.
 CAUTION: MAKE SURE THE CORRECT LSKS ARE PUSHED IN THE STEPS THAT
_______ FOLLOW. THIS WILL MAKE SURE THAT THE DATA TRANSFER IS FROM THE FMC WITH THE CORRECT NAVIGATIONAL DATABASE PART NUMBER TO THE FMC WITH THE INCORRECT NAVIGATIONAL DATABASE PART NUMBER. YOU WILL LOSE THE CORRECT NAVIGATIONAL DATABASE IF THE LSKS ARE NOT PUSHED CORRECTLY.
 (b)  
Push the LSK adjacent to the <TRANSMIT prompt on the CDU that corresponds to the FMC that will send data.

 (c)  
Push the LSK adjacent to the RECEIVE> prompt on the CDU that corresponds to the FMC that is to receive data.

 (d)  
Make sure the TRANSFER IN PROGRESS indication shows on the CDU that corresponds to the FMC that sends data.

 (e)  
Make sure the STANDBY ONE indication shows on the CDU that corresponds to the FMC that receives data.

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747-400 MAINTENANCE MANUAL
 (f)  When the crossload is completed, the TRANSFER COMPLETE indication replaces the TRANSFER IN PROGRESS indication.
 NOTE: The time it takes to complete a crossload is usually
____ less than twenty minutes. If the navigational database does not crossload correctly, the TRANSFER ABORTED indication will replace the TRANSFER IN PROGRESS indication.
　
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