777 AIRCRAFT MAINTENANCE MANUAL
POSITION LIGHTS -INTRODUCTION
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Jan 05/2002
POSITION LIGHTS -WING POSITION LIGHTS
General
The wing position lights show the position, attitude, and direction of flight of the airplane. There are forward position lights and rear position lights.
Location
The forward position lights are on the wing tips, forward of the wing anti-collision light. There are two lamps in each light assembly.
The rear position lights are on the rear of the wing at the tip, aft of the wing anti-collision light. There are two lamps in each light assembly.
Physical Description
The left forward position light has a red lens. The right light has a green lens. The aft position lights have a clear lens, thus the light is white.
The forward and rear position lamps are two-prong-flange-type lamps.
Each forward position light assembly has these parts:
*
Hinge bracket
*
Reflector (2)
*
Lamp (2)
*
Lanyard (not shown)
* Electrical connector (not shown).
Each rear position light has these parts:
*
Lens
*
Lamp (2)
*
Reflector (2)
*
Lanyard
*
Electrical connector.
Training Information Point
To get acces to the forward position lamps, loosen the captive screws to release the panel on the bottom side of the wing at the tip. Loosen two captive screws; rotate, and unhook the light assembly to get it out of the wing. The light assembly hangs by a lanyard. This gives you access to the lamps.
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
POSITION LIGHTS -WING POSITION LIGHTS
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Jan 05/2002
POSITION LIGHTS -WING POSITION LIGHT TRANSFORMERS
Purpose
The position light transformers decrease the amount of voltage that goes to the position lights.
Location
There is one transformer in each wing tip, inboard from the position lights. They are near the wing anti-collision light power supplies.
Physical Description
Each transformer has an electrical connector and four fasteners.
Training Information Point
You loosen captive screws to release the panel on the bottom of the wing at the tip to get access to the transformer.
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Jan 05/2002
POSITION LIGHTS -WING POSITION LIGHT TRANSFORMERS
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Jan 05/2002
POSITION LIGHTS -TAILCONE POSITION LIGHT
Purpose
The tailcone position light lets people outside the airplane see the location of the aft end of the airplane.
Location
The light is on the lower corner of the airplane tailcone.
Physical Description
The tailcone position light has a clear lens, thus the light is white.
There are two lamps in the position light. The lamps are two-prong-flange-type lamps. There is a reflector for each lamp.
The position light has an electrical connector and lanyard.
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ Sep 05/2002
POSITION LIGHTS -TAILCONE POSITION LIGHT
EFFECTIVITY BEJ ALL 33-43-00
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D633W101-BEJ May 05/2003
POSITION LIGHTS -TAILCONE POSITION LIGHT TRANSFORMER
Purpose
The position light transformer decreases the amount of voltage that goes to the position lights.
Location
The transformer is in the tailcone area in the aft end of the APU compartment. It is on the right side.
Physical Description
The transformer has an electrical connector and four fasteners.
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