(a)
Do one of these steps to remove electrical power from the light:

i.  
At the overhead panel, P5, set the switch to the off position and attach the DO-NOT-CLOSE tag.

ii.  Open each applicable circuit breaker on the overhead circuit breaker panel, P11, for the wing forward position light and attach the DO-NOT-CLOSE tag:

(2)
Do these steps to replace the lamp:   (Note, do not touch the new lamp with your hands, use gloves)

TASK 33-43-01-024-001
(a) Remove the forward navigation light lens assembly from the inboard leading edge of the winglet, by removing 14 screws [1].  See Figure 201.
Aviation Partners Boeing
757-200 MAINTENANCE MANUAL SUPPLEMENT  Part II
WARNING: DO NOT TOUCH THE LIGHT WITH YOUR BARE HANDS WHEN THE LIGHT IS HOT. INJURY CAN OCCUR IF YOU TOUCH THE LIGHT BEFORE IT BECOMES COOL.
(b)
Loosen the fasteners [2] and remove the reflector assembly [3].  See Figure 202.

(c)
Replace the lamp [4].

(d)
Install the reflector assembly [3] and tighten the fasteners [2].

(e)
To replace the second lamp, repeat steps (b) through (d).

(f)  
Reinstall the forward navigation light lens assembly and secure with 14 screws [1]. Torque the fasteners to 10-18 in-lbs

NOTE: Recommended to reapply MS122DF release agent to faying surfaces of lens retainer at each removal
S 712-003
(3) Do a test of the position lights.
(a)
Supply electrical power (AMM 24-22-00/201).

(b)
Close each circuit breaker that was opened and remove each DO-NOT-OPERATE or DO-NOT-CLOSE tag.

(c)
At the P5 panel, set the switch to the on position.   Make sure the lamps come on correctly.

(d)
Set the switch to the off position.  Make sure the lamps go off.

(e)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

TASK 33-43-01-962-015
3.  Wing Forward Navigation Light – LED Module Replacement (Fig. 203)
A. References
AMM 24-22-00/201, Electrical Power - Control
SSM 33-43-01
WDM 33-00-01
AP57.2-0615-2 WDM Supplement to WDM 33-43-11 thru 33-43-12

B. Access
(1)
 Location Zones

(a) 547/647 Winglet

(2)
 Access Panels

(a)
Left Winglet access panel

(b)
Right Winglet access panel

C. Procedure
S 962-019

(1) Remove and replace the LED Module.
(a) Do one of these steps to remove electrical power from the light:
Aviation Partners Boeing
757-200 MAINTENANCE MANUAL SUPPLEMENT  Part II
i.  At the overhead panel, P5, set the switch to the off position and attach the DO-NOT-CLOSE tag.
ii.  Open each applicable circuit breaker on the overhead circuit breaker panel, P11, for the wing forward position light and attach the DO-NOT-CLOSE tag:
　
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