(13)
AIPC 27-51-40, Fig. 3
(14)
AIPC 27-51-45, Fig. 2
(15)
AIPC 27-51-45, Fig. 3
D.
Access
(1)
Location Zone
587 Outboard Flap Midflap, LH
687 Outboard Flap Midflap, RH
(2)
Access Panel
587DT Midflap Outboard TE Flap
587HT Midflap Outboard TE Flap
687DT Midflap Outboard TE Flap
687HT Midflap Outboard TE Flap
E.
Prepare for the Removal
S 864-002
WARNING: OPEN THE CIRCUIT BREAKERS TO PREVENT RETRACTION OF THE
_______ SPOILERS. THE SPOILERS WILL RETRACT AUTOMATICALLY IF YOU USE THE SPEED BRAKE LEVER TO LIFT THE SPOILERS AND IF HYDRAULIC SYSTEM NO. 1 AND 4 ARE NOT PRESSURIZED. INJURY TO PERSONS CAN OCCUR IF THE SPOILERS RETRACT.
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7, Overhead Circuit Breaker Panel
1) 7G6, SPEED BRAKE AUTO CONTROL
S 864-003
(2)
Pressurize hydraulic systems No. 2, No. 3, and No. 4
(AMM 29-11-00/201).
S 864-004
(3)
Put the speed brake control lever in the UP detent to lift spoilers No. 1 thru 4 and 9 thru 12 above the outboard flaps.
S 494-005
(4)
Install the spoiler actuator locking tools or move the FLT CONTROL HYD POWER switches to SHUTOFF to make sure that the spoilers will not retract.
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A
747-400 MAINTENANCE MANUAL
S 864-053
WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP
CONTROL LEVER. WHEN YOU MOVE THE FLAP CONTROL LEVER WITH THE
HYDRAULIC SYSTEM PRESSURIZED, THE FLAPS AND FLAP DRIVE
MECHANISMS WILL MOVE QUICKLY. PERSONNEL CAN BE INJURED OR
EQUIPMENT DAMAGED.
(5)
Put the flap control lever in the 5-unit detent to extend flaps to the 5-unit position.
S 864-007
(6)
Release the pressure in hydraulic systems No. 2, No. 3 and No. 4 (AMM 29-11-00/201).
S 864-009
(7)
Supply electrical power (AMM 24-22-00/201).
S 864-055
(8)
Push the ALTN FLAPS ARM switch to put the flaps in alternate control.
S 864-056
(9)
Turn the ALTN FLAPS switch to the EXT position to electrically extend the flap.
NOTE: The flaps will extend to the 25-unit position.
S 864-011
(10)
Remove the electrical power (AMM 24-22-00/201).
S 014-012
(11)
Remove the movable outboard flap track fairings (AMM 27-51-31/401).
S 034-013
(12)
Remove the four horizontal bolts (8 and 10) and washers (9 and 10), from the aft end of the flap track.
S 034-014
(13)
Remove the flap track fairing fixed and movable links at the aft end of the flap track (AMM 27-51-45/401).
NOTE: Do not remove the attachment fitting for the flap track
____ fairing support from the aft end of the flap track.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Outboard Flap Installation
Figure 401 (Sheet 1)
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A
747-400
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