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SHAFT - LE FLAP DRIVE  2  78 WING LE  27-81-05 
SOLENOID - RECTIFIER AND PRIMARY DRIVE, SWITCH -Y11R001  4  8  WING LE 27-81-03 
SENSITIVE ANNUNCIATOR FEEDBACK, Y11S002  4  8  WING LE  27-88-01 
UNIT - (FIM 34-61-00/101) SWITCH - (FIM 27-50-00/101) UNIT - ELECTROPNEUMATIC DRIVE OVERPRESSURE, Y11S001 ALTN FLAPS EXT/RET, S1709 EFIS/EICAS INTERFACE R, M7351 EFIS/EICAS INTERFACE L, M7353 EFIS/EICAS INTERFACE C, M7352 ALTN FLAPS ARM S1710  4  8  WING LE  27-81-03 
1-LEFT, M876  4  1  535, V/C FLAP, LH  27-81-03 
1-RIGHT, M885  4  1 635, V/C FLAP, RH  27-81-03 
2-LEFT, M878  4  1 525, V/C FLAP, LH  27-81-03 
2-RIGHT, M883  4  1 625, V/C FLAP, RH  27-81-03 
3-LEFT, M879  4  1 523, V/C FLAP, LH  27-81-03 
3-RIGHT, M882  4  1 623, V/C FLAP, RH  27-81-03 
4-LEFT, M880  4  1 513, KRUEGER FLAP, INBD-CNTR, LH  27-81-03 
UNIT - (FIM 27-50-00/101) FLAP CONTROL C, M7880 FLAP CONTROL R, M7879 FLAP CONTROL L, M7881 4-RIGHT, M881  4  1 613, KREUGER FLAP, INBD-CNTR, RH  27-81-03 
VALVE - ALTERNATE SOLENOID, Y11LM01  4  8  WING LE  27-81-03 

* SEE WDM EQUIPMENT LIST
Lift Augmenting - Component Index Figure 101 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
FAULT ISOLATION/MAINT MANUAL

PILOTS' CENTER 
INSTRUMENT  P7 PANEL 
PANEL, P2-3  P6 PANEL 
SEE  A 
PILOTS' CONTROL STAND 
SEE  B 

P415 PANEL
E2-2
P414 PANEL E1-2
L,C,R FLAP CONTROL UNITS, M7881,M7880, M7879 (REF)
REVERSE
P2-3 PILOTS' CENTER
THRUST
LEVER (REF) INSTRUMENT PANEL A
A
A
FLAP CONTROL LEVER HANDLE (REF) FLAP
PILOTS' CONTROL STAND B
A-A
Lift Augmenting - Component Location Figure 102 (Sheet 1)
ALTN FLAPS EXT/RET SWITCH, S1709 (REF)
ALTN FLAPS ARM SWITCH, S1710 (REF)
FLAP UP
1
5
10
20
25
30
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 ALL  ú ú 01 Page 103 ú Jun 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL

(EXAMPLE)OUTBOARDDRIVE ROTARY ACTUATOR (EXAMPLE)
Lift Augmenting - Component Location
Figure 102 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
FAULT ISOLATION/MAINT MANUAL

LEFT, RIGHT LE FLAP 
ELECTROPNEUMATIC 
DRIVE UNIT NO. 4, 
DRIVE  M880,M881 
SHAFT 
LE FLAP 
ELECTROPNEUMATIC 
DRIVE UNIT (EXAMPLE) 
HINGE  SEE  E  SHT 4 

OFFSET GEARBOX
ROTARY ACTUATOR
FOLDING FAIRING
FAIRING ACTUATING LINKAGE
KRUEGER FLAP
KRUEGER FLAPS
C
LEFT, RIGHT LE FLAP ELECTROPNEUMATIC DRIVE UNIT NO. 1,2 AND 3 M876,M885,M878,M883, M879,M882
FLAP PANEL LE FLAPROTARY ELECTROPNEUMATICACTUATOR DRIVE UNIT (EXAMPLE)
FOLDING SEE E SHT 4 NOSE
VARIABLE CAMBER FLAPS
D
Lift Augmenting - Component Location (Details from Sht 2)Figure 102 (Sheet 3)
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