F.  Put the Airplane Back to Its Initial Condition
 S 865-046
 (1)  
Do the "Put Safety-Sensitive Systems Back to the Condition Before Air Mode Simulation" task (AMM 32-09-02/201).

 (2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-028
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747-400 MAINTENANCE MANUAL
 DIGITAL FLIGHT DATA RECORDER - MAINTENANCE PRACTICES
____________________________________________________
 1.  General_______
 A. This procedure contains:
 (1)  The task to download data from the FDR with the Portable Interface (PI) Unit.
 TASK 31-31-01-972-248
 2.  Make a copy of the FDR data with the Portable Interface (PI) Unit_____________________________________________________________________
 A. General
 (1)  This task uses the hand-held Portable Interface (PI) unit to make a copy of the data from the flight data recorder (FDR) while the FDR is in the airplane.
 (a)  
The PI puts the data on a removable PC card (PCMCIA).

 (b)  
The data on the PC card can then be analyzed by the applicable airline personnel.

 B. Equipment
 (1)  17TES0043, Unit - Interface, Portable (PI) 06141 L-3 Communications - Aviation Recorders 6000 E. Fruitville Road, P.O. Box 3041, Sarasota FL 34230-3041
 C. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 32-09-02/201, Air/Ground Relays

 D. Access
 (1)  Location Zone
 273 Area Above Ceiling, Left

 E. Procedure
 S 862-222
 (1)  
Supply Electrical power (AMM 24-22-00/201).

 S 862-223

 (2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
On the right power distribution center panel, P415: 1) 415L36, FLT RCDR AC

 (b)  
On the DC power distribution panel, P180: 1) 180J26, FLT RCDR DC

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747-400
MAINTENANCE MANUAL

 (3)  S 862-224Remove the end cap from the bottom of the portable interface (PI) unit and install the PC card into the slot.
 (4)  S 012-225Open the access panel for the aft equipment center in the overhead crew rest compartment near door 5 to get access to the FDR.
 (5)  S 862-226Open the connector cover on the front of the FDR to get access to the ground support equipment (GSE) connector.
 (6)  S 862-227Use the cable to connect the PI to the GSE connector.
 S 862-228

 WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKER. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  
Prepare the safety-sensitive systems for air mode simulation (AMM 32-09-02/201).

 S 862-229

 (8)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  On the P7, panel: 1) 7H8, GND SAFETY RELAY
 S 862-230
 (9)  Remove the DO-NOT-CLOSE tag and close these circuit breakers:
 (a)  
On the P415, panel: 1) 415L36, FLT RCDR AC

 (b)  
On the P180, panel: 1) 180J26, FLT RCDR DC

 S 862-231
 (10)
 Make sure that the FDR main menu shows on the PI display.

 S 862-232

 (11)
 Make these selections on the PI (use the arrow switches to move the cursor to theselection and then push the SELECT switch):

 NOTE: The arrow switches move the cursor; the SELECT switch makes a
____ selection; the DELETE switch goes back one selection; the HOME/MENU switch causes the FDR main menu to show.
　
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