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B
RIGGING DIMENSION (|0.030 INCH)
FLAP NO.
DIMENSION
DIMENSION
X
Y
1E AND 26E
30.89
30.80
(OUTBD LINKS) 1E AND 26E
30.87
30.78
(INBD LINKS) 1 AND 26
30.87
30.78 2,3,24,25
30.88
30.79 4,5,22,23
30.89
30.80 6 AND 21
35.71
35.62 7 AND 20
35.71
35.62
(OUTBD LINKS) 7 AND 20
35.73
35.64
(INBD LINKS) 8 AND 19
35.73
35.64 9 AND 18
35.76
35.67
(OUTBD LINKS) 9 AND 18
35.79
35.70
(INBD LINKS) 10 AND 17
35.82
35.73
(OUTBD LINKS) 10 AND 17
35.88
35.79
(INBD LINKS)
Variable Camber Flap Linkage Extension
Figure 402

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A
747-400
MAINTENANCE MANUAL

 C. Access
 (1)  
Location Zone
 512 Krueger Flap Inboard, LH
 513 Krueger Flap Midflap, LH
 514 Krueger Flap Outboard, LH
 522 Variable Camber Flap, LH
 523 Variable Camber Flap, LH
 524 Variable Camber Flap, LH
 525 Variable Camber Flap, LH
 526 Variable Camber Flap, LH
 532 Variable Camber Flap, LH
 533 Variable Camber Flap, LH
 534 Variable Camber Flap, LH
 535 Variable Camber Flap, LH
 536 Variable Camber Flap, LH
 537 Variable Camber Flap, LH
 612 Krueger Flap Inboard, RH
 613 Krueger Flap Midflap, RH
 614 Krueger Flap Outboard, RH
 622 Variable Camber Flap, RH
 623 Variable Camber Flap, RH
 624 Variable Camber Flap, RH
 625 Variable Camber Flap, RH
 626 Variable Camber Flap, RH
 632 Variable Camber Flap, RH
 633 Variable Camber Flap, RH
 634 Variable Camber Flap, RH
 635 Variable Camber Flap, RH
 636 Variable Camber Flap, RH
 637 Variable Camber Flap, RH

 D.
Prepare for Removal

 S 864-002
 (1)  Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
 S 864-003
 CAUTION: DO NOT ELECTRICALLY EXTEND OR RETRACT THE FLAPS MORE THAN ONE
_______ TIME IN 5 MINUTES. DAMAGE TO THE MOTOR CAN OCCUR IF THE MOTOR BECOMES TOO HOT.
 (2)  
Extend the flaps electrically:

 (a)  
Push the ALTN FLAPS ARM switch on the center panel to put the flap system in alternate control.

 (b)  
Turn the ALTN FLAPS EXT/RET switch to the EXT position.

 S 864-004
 (3)  
Put the flap system in the usual control:

 (a)  
Turn the ALTN FLAPS EXT/RET switch to OFF.

 (b)  
Push the ALTN FLAPS ARM switch.

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A
747-400 MAINTENANCE MANUAL
 S 864-005
 (4)  
Do this task if electrical power is not necessary: "Electrical Power Removal" (AMM 24-22-00/201).

 S 864-006

 (5)  
For the applicable system, open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6 Main Power Distribution Panel
 1) 6L21 LE FLAP ELEC CONT GRP B DRIVE 1
 2) 6L22 LE FLAP ELEC CONT GRP A DRIVE 2
 3) 6L23 LE FLAP ELEC CONT GRP A DRIVE 3
 4) 6L24 LE FLAP ELEC CONT GRP A DRIVE 4
 5) 6E3 PRIM LE FLAP CONT GRP A AC
 6) 6E4 PRIM LE FLAP CONT GRP A DC
 7) 6E5 PRIM LE FLAP CONT GRP B AC
 8) 6E6 PRIM LE FLAP CONT GRP B DC

 (b)  
P7 Overhead Circuit Breaker Panel
 1) 7C10 FLT CONT ELEC 2L-AC
 2) 7C11 FLT CONT ELEC 2L-DC
 3) 7C12 FLT CONT ELEC 1L-AC
 4) 7C13 FLT CONT ELEC 1L-DC
 5) 7C14 FLT CONT ELEC 1R-AC
 6) 7C15 FLT CONT ELEC 1R-DC
 7) 7C16 FLT CONT ELEC 2R-AC
　
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