(12)
Replace jackscrew fairing.
(13)
Position flap control levers to FLAP UP detent, to hydraulically retract control surfaces.
(14)
Test switch per par. 2.
2. Flaps 10-Degree Switch Test (S584)
A. Provide system A hydraulic power (Ref 27-81-0).
B. Connect electrical power to the airplane.
C. Check that the following circuit breakers on P6 panel are closed:
(1)
LE FLAPS POS IND DC
(2)
LE FLAPS POS IND AC
D. Place flap control lever in 10-unit detent.
CAUTION: CLEAR AREA FOR FLAP OPERATION.
E. Check that amber LE FLAPS TRANSIT light on P2 panel illuminates as leading edge devices extend.
F. Check that green LE FLAPS EXT light on P2 panel illuminates when all slats are fully extended.
G. Remove electrical and hydraulic power if no longer required.
521
27-88-21 Page 504 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 20/87
LEADING EDGE FLAP AND SLAT POSITION INDICATION MODULE -MAINTENANCE PRACTICES
1. General
A. The leading edge flaps and slats position indication module, M229, provides circuits for indicator lamps denoting leading edge flap and slat position. The indication module, M229, is found in the electrical/electronic compartment on equipment rack E3-2.
2. Remove the Leading Edge Flaps and Slats Position Indication Module (Fig. 201)
A. Open these circuit breakers and attach DO-NOT-CLOSE tags:
(1) P6-2 Panel
(a)
LE FLAP POS IND DC
(b)
LE FLAP POS IND AC
B. Remove the indication module from the shelf.
3. Install the Leading Edge Flaps and Slats Position Indication Module (Fig. 201)
A. Carefully install the indication module on the equipment rack.
B. Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(1) P6-2 Panel
(a)
LE FLAP POS IND DC
(b)
LE FLAP POS IND AC
C. Do the leading edge flap and slat proximity sensors test (Ref 27-88-11).
4. Restore Airplane to Normal
A. If it is no longer required, remove hydraulic power (Ref 27-81-0).
B. If it is no longer required, remove electrical power.
500
May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-88-31 Page 201
E82923
Leading Edge Flap and Slat Position Indication Module Installation 500
27-88-31 Figure 201 May 01/99
Page 202
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
LEADING EDGE FLAP AND SLAT POSITION INDICATION MODULE -MAINTENANCE PRACTICES
EFFECTIVITY
Airplanes with SB 27-1181
1. General
A. The leading edge flaps and slats position indication module, M229, provides circuits for indicator lamps denoting leading edge flap and slat position. The indication module, M229, is found in the electrical/electronic compartment on the equipment rack E3-2.
Remove the Leading Edge Flaps and Slats Position Indication Module (Fig. 201)
A. Open these circuit breakers and attach DO-NOT-CLOSE tags:
(1) P6-2 Panel
(a)
LE FLAP POS IND DC
(b)
LE FLAP POS IND AC
B. Remove the indication module from the shelf.
3. Install the Leading Edge Flaps and Slats Position Indication Module (Fig. 201)
A. Carefully install the indication module on the equipment rack.
B. Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(1) P6-2 Panel
(a)
LE FLAP POS IND DC
(b)
LE FLAP POS IND AC
C. Do the test of the leading edge flap and slat position indication module.
(1)
Push the ON/OFF key on the FSIM to start the BITE display.
(2)
Wait for one minute or less for the self-test of the indication module.
(3)
Do these steps to make sure the display on the indication module shows the correct mode select type:
(a) Push the down arrow key until you find OTHER FUNCTNS?
Feb 01/95 27-88-41 Page 201
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
E82923
Leading Edge Flap and Slat Position Indication Module Installation 501
27-88-41 Figure 201 Feb 01/95
Page 202
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(b)
Push the YES button adjacent to the arrow key to enter menu selection.
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