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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-81-00-700-804
10. Leading Edge Uncommanded Motion Protection Test
A. References
Reference Title
24-22-00-860-811 Supply Electrical Power (P/B 201)
29-11-00-860-801 Hydraulic System A or B Pressurization (P/B 201)
29-11-00-860-805 Hydraulic System A or B Power Removal (P/B 201)
B. Location Zones
Zone Area
117 Electrical and Electronics Compartment - Left
211 Flight Compartment - Left
212 Flight Compartment - Right
C. Access Panels
Number Name/Location
117A Electronic Equipment Access Door
D. Prepare for the Test
SUBTASK 27-81-00-010-004
(1) Open this access panel:
Number Name/Location
117A Electronic Equipment Access Door
SUBTASK 27-81-00-860-052
(2) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-81-00-860-053
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE FLIGHT CONTROL
SURFACES, THE THRUST REVERSERS, AND THE LANDING GEAR. THESE
COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER.
THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Pressurize hydraulic system B. To pressurize the hydraulic system, do this task: Hydraulic
System A or B Pressurization, TASK 29-11-00-860-801.
E. Leading Edge Uncommanded Motion Protection Test
SUBTASK 27-81-00-860-077
WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING EDGE FLAPS
AND SLATS AND THE TRAILING EDGE FLAPS. THE FLAPS AND SLATS WILL MOVE
DURING THIS TEST. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO
EQUIPMENT.
(1) Move the flap control lever to the 1-unit position to extend the leading edge flaps and slats and
the trailing edge flaps.
SUBTASK 27-81-00-740-003
(2) Do this test of the leading edge cruise depressurization valve:
(a) Move the ALTERNATE FLAPS ARM switch on the P5-3 panel to the ARM position.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
(b) Use the FSEU to operate the leading edge cruise depressurization valve:
1) Push the ON/OFF button on the front panel of the FSEU to turn on the display.
NOTE: The display will show EXISTING FAULTS?.
2) Push the down arrow until OTHER FUNCTNS? shows on the display.
3) When OTHER FUNCTNS? shows, press YES.
4) When SET OUTPUT? shows, press YES.
5) When LE DEPR VALVE? shows, press YES.
6) When SET ON? shows, press YES.
7) The FSEU display will show CMD ON/SET OFF? for approximately 75 seconds.
(c) Make sure the leading edge flaps and slats do not move.
(d) Wait until the FSEU display shows LE DEPR VALVE?.
NOTE: This will take approximately 75 seconds from the time
CMD ON/SET OFF? shows on the display.
(e) Move the flap control lever to the UP position.
(f) Make sure the leading edge flaps and slats and the trailing edge flaps do not move to the
retracted position.
(g) Push the YES button on the FSEU to display SET ON?.
(h) When SET ON? shows, press YES.
(i) Make sure the leading edge flaps and slats retract and that the trailing edge flaps stay
extended.
NOTE: The LE FLAPS TRANSIT lights will stay on.
(j) Wait until the FSEU display shows LE DEPR VALVE?.
NOTE: This will take approximately 75 seconds.
(k) Make sure the leading edge flaps and slats move to the extend position.
(l) Move the ALTERNATE FLAPS ARM switch to the OFF position.
(m) Make sure the leading edge flaps and slats, and the trailing edge flaps move to the
retracted position.
SUBTASK 27-81-00-720-002
(3) Do this test of the leading edge UCM shutoff valve:
(a) Make sure the flap control lever is in the UP detent position.
(b) LE DEPR VALVE? shows on the FSEU display, press the DOWN ARROW once to show LE
UCM SHUTOFF?.
(c) When LE UCM SHUTOFF? shows, press YES.
(d) When SET ON? shows, press YES and move the flap control lever to the 1-unit detent
position within 5 seconds .
NOTE: If you do not move the lever within 5 seconds, the test will not work.
(e) The FSEU display will show CMD ON/SET OFF? for approximately 75 seconds.
1) Make sure the leading edge flaps and slats stay in the UP position and that the trailing
edge flaps move to the 1-unit position.
NOTE: The LE FLAPS TRANSIT light on the center panel P2 will come on.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-00
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Feb 10/2006
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
(f) Make sure all of the LE DEVICES, FLAPS and SLAT indications on the overhead panel P5
　
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