C. Location Zones
Zone Area
522 Left Wing - Slat No. 4
622 Right Wing - Slat No. 5
D. Access Panels
Number Name/Location
521AB Outboard Leading Edge Blowout Door - Slat Station 20.04
621AB Outboard Leading Edge Blowout Door - Slat Station 20.04
E. Prepare to Dispatch With a Wing Anti-Ice Valve Closed
SUBTASK 30-00-00-840-001
(1) Prepare to close the wing anti-ice valve:
WARNING
MAKE SURE YOU DO THE PROCEDURE TO DEACTIVATE THE LE
SLATS. THE LEADING EDGE SLATS CAN MOVE AND CAUSE INJURIES
TO PERSONS IF THEY ARE NOT DEACTIVATED.
(a) Do this task: Leading Edge Flap and Slat Locks Installation, TASK 27-81-00-480-801.
(b) Open this circuit breaker and install safety tag:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
(c) For the left wing, open this access panel:
Number Name/Location
521AB Outboard Leading Edge Blowout Door - Slat Station 20.04
(d) For the right wing, open this access panel:
Number Name/Location
621AB Outboard Leading Edge Blowout Door - Slat Station 20.04
SUBTASK 30-00-00-020-001
(2) Disconnect the electrical connector from the wing anti-ice valve and stow the connector.
NOTE: The associated wing anti-ice VALVE OPEN light will illuminate bright.
SUBTASK 30-00-00-040-001
(3) Move the red lever on the wing anti-ice valve to the CLOSED position.
SUBTASK 30-00-00-840-002
(4) Return the airplane to its usual condition with a wing anti-ice valve locked closed:
(a) For the left wing, close this access panel:
Number Name/Location
521AB Outboard Leading Edge Blowout Door - Slat Station 20.04
(b) For the right wing, close this access panel:
Number Name/Location
621AB Outboard Leading Edge Blowout Door - Slat Station 20.04
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-00-00
Page 902
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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