Operational Test of the Wing and Engine Scan Lights

TASK 33-49-00-710-001-A
Operational Test of the Wing and Engine Scan Lights

1. Reason for the Job
Make sure that the wing/engine scan lights operate correctly.
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)

3. Job Set-up
Subtask 33-49-00-861-051-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 33-49-00-865-050-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/EXT LT/WING/AND ENG SCAN/R	1LX	W03
122VU	LIGHTING/EXT LT/WING/AND ENG SCAN/L	5LX	W02

4. Procedure
Subtask 33-49-00-710-050-A

A. Operational Test of the Wing and Engine Scan Lights

ACTION	RESULT
1.On the panel 25VU: set the EXT LT/WING selector switch to ON,	From each side of the fuselage: the wing/engine scan-lights come on,
set the EXT LT/WING selector switch to OFF.	the wing/engine scan lights go off.

5. Close-up
Subtask 33-49-00-862-051-A

A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 04:04:07 UTC