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 C.  The pilot can control the electrical emergency lights with a switch on the overhead panel, P5. There is also a switch in the passenger compartment to give the attendants control of the emergency lights.
 D.  For more data about this lighting system, refer to these sources:
 (1)  SSM 33-51-01 thru 33-51-99
 (2) WDM 33-51-11 thru 33-51-99Slide Light
___________
 A.  A slide light is installed on the outer side of the fuselage above the upper deck door. This emergency light gives lighting to the escape area on the outer side of the airplane.
Ceiling Lights
______________
 A.  Ceiling lights give escape path lighting from above on the inner side of the airplane. There are ceiling lights in the flight compartment and passenger compartment.
 B.  The ceiling lights are also referred to as aisle, crew, crew rest, and
 ladder lights.Door (Slide) Lights
___________________
 A.  The upper deck door has two emergency lights in the top of the door frame. These lights give lighting to the outer escape path when the door is opened.
 (1)  Each light is hinged and goes up into a stowed position to provide maximum door opening if required for maintenance purposes. Each light is equipped with two quick release fasteners. One secures the light in the stowed (raised) position. The other fastener secures the light in the normal (extended) position. A green band on the light assembly is provided for visually checking that the light is in the normal (extended) position for airplane operation. The green band may be visually checked with the door opened or closed. Openings in the top of the door permit light check with door closed.
 NOTE: The light must be secured in the normal (extended) position
____ and the green band visible for airplane operation.
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 33-51-00
 ALL  ú ú 06 Page 1 ú Feb 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 5.  Door (Sill) Lights
__________________
 A.  Two emergency lights are installed in the upper frame of the passenger door on the main deck. These lights give lighting to the doorway.
 6.  Exit Signs
__________
 A.  In an electrical power failure, the exit signs show the location of the doors to the passengers and the crew.
 (1)  
There is an exit sign above each door.

 (2)  
There are also exit signs which point to the doors. These signs are installed near the ceiling above or adjacent to the aisle.

 B.  The lamps in the electrically lighted exit signs operate with the 6 volts of electrical power from the emergency light batteries.
 7.  Pilot's Switch
______________
 A.  The pilot's switch for the emergency lights is on the overhead panel, P5. This switch gives the primary control of the emergency lights.
 (1)  
In the on position, the emergency lights are on.

 (a)  An >EMER LIGHTS advisory message shows on the main EICAS display.

 (2)  
In the armed position, the emergency lights come on automatically if there is an electrical power failure. The emergency lights can be operated manually with the attendant's switch.

 (a)  An >EMER LIGHTS advisory message shows on the main EICAS display if the attendant's switch is used to make the emergency lights come on.

 (3)  
In the off position, the emergency lights are off unless the attendant's switch is set to the on position.

 (a)  An >EMER LIGHTS advisory message shows on the main EICAS display.
 8.  Attendant's Switch
__________________
 A.  The attendant's emergency lights switch is on the attendant's panel in the passenger compartment on the upper deck. This switch gives the secondary control of the emergency lights.
 (1)  
In the on position, the emergency lights are on.

 (a)  You cannot make the emergency lights go off with the pilot's switch. You must first set the attendant's switch to the off position.

 (2)  
In the normal position, the emergency lights come on automatically if there is an electrical power failure.

 (a) The pilot's switch must be set to the armed position.
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