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The taxi light is located in a housing in the leading edge of the left wing. The landing light has an optic lens and a 35 watt filament. It is located outboard in the housing. A switch in the left instrument panel controls the light and a circuit-breaker protects the system.
Doc # 6.02.01 Page 3
Rev. 4 09 Jan 2003

33-40-00
AMM

Landing/Taxi Light Assembly Cover
Figure 2: Landing and Taxi Light Installation
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Lights
AMM

Trouble-Shooting
1. General
The table below lists the defects you could have with the exterior light system. If you have the trouble detailed in the Trouble column read across to the Possible Cause column. Then do the repair given in the Repair column.
Trouble  Possible Cause  Repair 
Both position lights do not operate.  Circuit breaker not set or defective. Defective position light switch. Defective wiring.  Set/Replace the circuit-breaker. Replace the switch. Repair/Replace the wiring. Refer to Chapter 92 for the wiring diagrams. 
One position light does not operate.  Defective filament. Defective wiring.  Replace the filament. Repair/Replace the wiring. Refer to Chapter 92 for the wiring diagrams. 
Both strobe lights do not operate.  Circuit-breaker not set or defective. Defective switch. Defective wiring.  Set/Replace the circuit-breaker. Replace the switch. Repair/Replace the wiring. Refer to Chapter 92 for the wiring diagrams. 
One strobe light does not operate.  Defective power supply unit. Defective strobe unit. Defective wiring.  Replace the power supply unit. Replace the strobe unit. Repair/Replace the wiring. Refer to Chapter 92 for the wiring diagrams. 
Strobe and position light does not operate on one side.  Connector at wing root disconnected.  Connect the connector. 

Doc # 6.02.01 Page 101
Rev. 4 09 Jan 2003

33-40-00
AMM

DA 40 Series

Trouble  Possible Cause  Repair 
Landing light or taxi light does not operate.  Defective light unit. Circuit-breaker not set or defective. Defective landing light or taxi light switch. Loose connector at the light unit. Defective wiring.  Replace the light unit. Set/Replace the circuit-breaker. Replace the related switch. Connect the connector correctly. Repair/Replace the wiring. Refer to Chapter 92 for the wiring diagrams. 

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Lights
AMM

Maintenance Practices
1. General
These maintenance practices tell you how to remove/install defective filaments and light units. They tell you how to adjust the landing light and the taxi light. They also tell you how to remove/install components in the system. Refer to Chapter 92 for the wiring diagrams.
WARNING:  DO NOT OPERATE THE STROBE LIGHTS WHEN PERSONS ARE CLOSE TO THE AIRPLANE AND DO NOT LOOK AT THE LIGHT WHEN IT OPERATES. STROBE LIGHTS CAN CAUSE EYE DAMAGE. 
WARNING:  AFTER YOU SET THE POWER TO OFF, MAKE SURE THAT YOU WAIT A MINIMUM OF FIVE MINUTES BEFORE YOU DO WORK ON THE STROBE LIGHTS. THE POWER SUPPLIES TO THE STROBE LIGHTS GENERATE HIGH VOLTAGE. HIGH VOLTAGE CAN CAUSE DEATH OR 

INJURY TO PERSONS.
2. Remove/Install the Taxi Light
A. Remove the Taxi Light
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Detail Steps/Work Items  Key Items/References 
(1)  Set the ALT/BAT switch (Lycoming version) or ELECTRIC MASTER key switch (TAE version) to OFF. 
(2)  Set the TAXI light switch to OFF. 
(3)  Set the TAXI/MAP circuit -breaker open. 
(4)  Remove the taxi/landing light cover from the wing: S Remove the 12 screws which attach the light cover to the wing. S Pull the light cover clear of the wing. 
(5)  Remove the screws which attach the taxi light to the wing.  The taxi light is the outboard assembly. Refer to Figure 2. 
　
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