SUBTASK 30-11-00-420-001
(4) Put the WING ANTI-ICE switch in the ON position.
(a) Make sure that each light stays off.
SUBTASK 30-11-00-020-003
(5) Put the WING ANTI-ICE switch in the OFF position.
SUBTASK 30-11-00-420-002
(6) Put the ENG ANTI-ICE 1 switch in the ON position.
(a) Make sure that the left COWL VALVE OPEN light stays off.
SUBTASK 30-11-00-020-004
(7) Put the ENG ANTI-ICE 1 switch in the OFF position.
SUBTASK 30-11-00-420-003
(8) Put the ENG ANTI-ICE 2 switch in the ON position.
(a) Make sure that the right COWL VALVE OPEN light stays off.
SUBTASK 30-11-00-020-005
(9) Put the ENG ANTI-ICE 2 switch in the OFF position.
SUBTASK 30-11-00-040-001
(10) Install DO-NOT-OPERATE tags on the WING ANTI-ICE, ENG ANTI-ICE 1 and ENG ANTI-ICE
2 switches on the engine and wing anti-ice control panel (P5-11).
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-00
Page 202
D633A101-ILF Feb 15/2015
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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