WING THERMAL ANTI-ICING SHUTOFF VALVE - ADJUSTMENT/TEST
1. General
A. This procedure contains a task to test the wing thermal anti-icing shutoff valve.
TASK 30-11-11-710-801
2. Wing Thermal Anti Icing Shutoff Valve Test
(Figure 501)
A. General
(1) This test makes sure that the Wing Thermal Anti-Icing Shutoff Valve is operating properly.
B. References
Reference Title
24-22-00-860-813 Supply External Power (P/B 201)
24-22-00-860-814 Remove External Power (P/B 201)
C. Location Zones
Zone Area
212 Flight Compartment - Right
520 Subzone - Left Wing: Leading Edge, Fwd of Front Spar, Outboard of Strut and
Nacelle Gap Cover Area
620 Subzone - Right Wing: Leading Edge, Forward of Front Spar, Outboard of Nacelle
Strut
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 for the Test
SUBTASK 30-11-11-860-004
(1) Do this task: Supply External Power, TASK 24-22-00-860-813.
SUBTASK 30-11-11-860-005
(2) Make sure that the thrust levers are in the IDLE position.
SUBTASK 30-11-11-010-002
(3) Open the applicable wing 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
F. Procedure
SUBTASK 30-11-11-860-006
(1) Press and release the L VALVE OPEN and R VALVE OPEN light switches on the P5-11 panel.
(a) Make sure each light comes on then goes off.
SUBTASK 30-11-11-860-007
(2) Make sure the TAI valves open correctly.
(a) Put the WING ANTI-ICE switch in the ON position.
(b) Make sure the VALVE OPEN lights come on brightly for 1 to 3 seconds.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-11
Page 501
D633A101-ILF Jun 15/2015
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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