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A
737-300/400/500MAINTENANCE MANUAL
 STEADY POSITION (NAVIGATION) LIGHTS - DESCRIPTION AND OPERATION
_______________________________________________________________
 1.  General_______
 A.  Steady position lights show the direction and attitude of the airplane.
 B.  These 28 volt lights are installed in each wingtip. One light on each wingtip points aft and is white. The other lights point outboard and are red on the left wingtip and green on the right wingtip.
 C.  You set a switch on the overhead panel, P5, to make the steady position lights come on and go off.
 D.  For more data about this lighting system, refer to these sources:
 (1)
SSM 33-40-03

 (2)
WDM 33-43-01

 2.  White Steady Position Lights____________________________
 A.  The wing trailing edge mounted white lights provide a horizontal beam parallel with the centerline of the airplane to 140 degrees outboard with 180-degree vertical coverage. Each tail light assembly is installed in a short boom on the wingtip trailing edge.
 3.  Red and Green Steady Position Lights____________________________________
 A.  The wingtip colored lights provide a horizontal beam parallel with the centerline of the airplane to 110 degrees outboard with 180-degree vertical coverage. The light assembly is installed on a mounting bracket within the window housing on the wingtip assembly.
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 ALL  ú ú 01 Page 1 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
RED STEADY POSITION LIGHTS SEE
A WHITE STEADY POSITION LIGHT SEE
B
POSITION LIGHT LIGHTS
SEE
B SEE

WINDOW

FWD

WHITE STEADY POSITION LIGHT

B

AIRPLANES WITH TWO RED AND
TWO GREEN POSITION LIGHTS

AIRPLANES WITH A STROBE
POSITION LIGHT IN EACH WINGTIP

Steady Position Lights - Component Location Figure 1

A07657
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STEADY POSITION (NAVIGATION) LIGHTS - TROUBLE SHOOTING
______________________________________________________
 1.  General_______
 A.  Trouble shooting the navigation lights is best accomplished during adjustment/test (33-43-00). Trouble shooting requires that power be available and appropriate circuit breakers be closed.
 B.  Trouble shooting procedures are based on the assumption that wiring is OK and electrical power is availabe. If the corrective action in the procedure does not correct the problem, check the wiring using the wiring diagram.
2.  Navigation Lights Trouble Shooting Chart
TROUBLE  PROBABLE CAUSE  ISOLATION PROCEDURE  REMEDY 
Navigation light inoperative  Bulb burned out or faulty switch  Replace bulb. If light operates, bulb was burned out. If light still inop-erative, replace switch  Replace bulb, Replace switch 

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 ALL  ú ú 01 Page 101 ú Feb 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STEADY POSITION (NAVIGATION) LIGHTS - ADJUSTMENT/TEST
_____________________________________________________
 1.  General
________
 A.  This procedure contains an operational test of the steady position (navigation) lights.
 TASK 33-43-00-715-001
 2.  Steady Position (Navigation) Lights - Operational Test
______________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
　
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