(2)  
You can use the HHDLU to make a copy of the flight data without the removal of the FDR from the airplane. A different procedure to access the flight data is to remove the FDR from the airplane. The flight data is then removed from the FDR.

 (3)  
The ATE connector is on the front of the FDR.

 B.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 25-21-71/401, Lowered Ceiling Panels

 C.  Equipment
 (1)  964-0446-001 Unit - Hand Held Download 27914 Allied-Signal Inc., DBA Allied-Signal Aeorspace 2100 NW 62nd St, Fort Lauderdale, FL 33309
 D.  Access
 (1)  Location Zone
 109 Aft Galley

 E.  Prepare to Make a Copy of the Flight Data From the FDR
 S 862-090
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 862-051

 (2)  
Open these circuit breakers:

 (a)  On the P18 panel,
 1) FLIGHT RECORDER AC
 2) FLIGHT RECORDER DC

 S 862-091
 (3)  
Put the flight data recorder TEST--NORMAL switch to the NORMAL position.

 S 012-092

 (4)  
Open the lowered ceiling panel No. 1 above the aft galley (AMM 25-21-71/401).

 (a)  Make sure the HHDLU power switch is OFF.

 (5)  
Connect the connector of the HHDLU cable to the FDR ATE connector.

 (6)  
Install the removable media into the HHDLU.

 S 422-093
 S 422-094
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 S 862-053
 (7)  Close these circuit breakers:
 (a)  On the P18 panel,
 1) FLIGHT RECORDER AC
 2) FLIGHT RECORDER DC

 S 862-089
 (8)  
Set the flight data recorder TEST-NORMAL switch to the TEST
 position.

 S 972-054

 (9)  
Push the red power switch, adjacent to the HHDLU's RS-422 port, to supply power.

 NOTE: When power is first apply to the HHDLU, the HHDLU display
____ will not be on. After approximately 30 seconds, the HHDLU display will show the main menu.
 (a) Make sure the HHDLU display shows DNLD in the main menu.
 F. Procedure
 S 862-095
 (1)  Push the DNLD key.
 (a)  Make sure the DOWNLOAD MENU shows on the display.
 NOTE: The maximum quantity of flight data the HHDLU can make a
____ copy of is 27.2 hrs. If the file DOWNLOAD1.DLU already exist on the removable media, the HHDLU will change the filename until it found a filename that is not used. To change the time or filename, push the TIME or FILE key.
 S 862-088
 (2)  Push the GO key.
 (a)  If the HHDLU display shows DISK FULL, do these steps: 1) Push a key.
 a) Make sure the CONFIRM DELETE menu shows on the display. 2) Push the YES key to erase the file. 3) Erase files until sufficient memory is available to make a
 copy of the flight data.
 NOTE: After each file is erase, the HHDLU make sure the
____ HHDLU has sufficient memory space. If there is sufficient memory, the HHDLU will start to make a copy.
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 4)  Make sure the HHDLU display shows REC BLKS and XER BLKS.
 NOTE:____ REC BLKS is the number of blocks the HHDLU will move the removable media. XFER BLCKS is the number of blocks the HHDLU will move from the FDR. The REC BLKS and XFER BLKS fields will change during the copy procedure.
 (b)  After the copy procedure is completed, make sure the main menu shows on the display.
　
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