(Rectangular sensor actuator required) (Optional to A32102)
(3)
Deactuator - proximity sensor (optional) Material: 5052, 6061, 7075, or 2024 alumimum or sheet copper Dimensions: 1.5 x 0.75 x 0.05 inches
D.
Access
(1)
Location Zone
114 Nose Gear Wheel Well - RH
715 Nose Landing Gear
222 Control Cabin - RH
E.
Prepare the Airplane for the Test
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A
747-400 MAINTENANCE MANUAL
S 412-057
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Make sure the ground locks are installed in all landing gear (AMM 09-11-00/201).
S 492-064
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE STEERING LOCKOUT PIN. THE NOSE WHEEL CAN ACCIDENTALLY TURN AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Make sure the steering lockout pin is installed (AMM 09-11-00/201).
S 492-065
WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Install the door locks on the nose landing door (AMM 32-00-30/201).
S 862-059
(4)
Supply electrical power (AMM 24-22-00/201).
S 742-060
(5)
Do these steps to prepare the CMC for the test (Fig. 202):
NOTE: This test uses the CMCs.
____
(a)
Push the MENU key on the CDU to get the CDU MENU.
(b)
Push the line-select key, adjacent to the <CMC display.
(c)
Push the line-select key, adjacent to the <OTHER FUNCTIONS display.
(d)
Push the line-select key, adjacent to the <INPUT MONITORING display.
(e)
Push the CDU keys E/070/271/00.
(f)
Push the key 1L.
(g)
Push the NEXT PAGE key.
(h)
Push the CDU keys E/070/273/00.
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A 747-400 MAINTENANCE MANUAL
"INPUT MONITORING" DISPLAY
LINE SELECT KEYS (LSK)
CDU
"INPUT MONITORING" DISPLAY
(EXAMPLE)
Test of the Nose Gear lock Sensor Installation
Figure 202
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D15002
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747-400
MAINTENANCE MANUAL
(i) Push the line-select key, adjacent to the <RETURN display until the CDU MENU shown.
S 722-075
(6)
Do a test of the nose gear primary position indication:
(a)
Push the NEXT PAGE key as necessary to show the logic
conditions of label 271/00.
(b)
Make sure the CDU display of label 271/00 is shown as follows:
(c)
Condition - Gear Down and Locked
1) NOSE GEAR DOWN/LOCK on Bit 18 - Bit State 1
2) NOSE GEAR UP/LOCK on Bit 19 - Bit State 0
(d)
Put a rectangular deactuator on the sensor, S397 (nose gear primary lock sensor).
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