I.
Put the Airplane Back to Its Usual Condition.
S 865-020
(1)
Close circuit breakers that follow:
(a)
P7 Overhead Circuit Breaker Panel
1) 7A3 AURAL WARN L
2) 7A4 AURAL WARN R
3) 7F24 LANDING GEAR LEVER LOCK
S 865-021
(2)
Remove the pressure from hydraulic systems No. 1 and 4
(AMM 29-11-00/201).
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-022
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A
747-400 MAINTENANCE MANUAL
LANDING GEAR CONTROL SYSTEM - INSPECTION/CHECK
______________________________________________
1. General_______
A. This procedure contains one task, the visual inspection of the landing gear mechanical controls, cranks, rods, and cables inside the pressurized area.
B. To do the visual inspection of the landing gear mechanical control, you must do these steps:
-
Remove the landing gear control module
-
Remove the applicable ceiling panels in the passenger cabin
-Do a visual inspection of all cranks, rods, and cables
-
Install the ceiling panels in the passenger cabin
-
Install the landing gear control module.
TASK 32-31-00-206-009
2. Landing Gear Mechanical Controls Security and Condition Examination___________________________________________________________________
A. References
(1)
20-21-03/601, Control Cables
(2)
25-21-03/401, Main Deck Sidewall Lining Doorway Panels
(3)
25-22-01/401, Main Passenger Cabin Ceiling Panels
(4)
32-31-01/401, Landing Gear Control Handle Module
(5)
IPC 32-31-61 Fig. 1
B.
Access
(1)
Location Zone 211 Passenger Cabin - Nose to First Door, LH 212 Passenger Cabin - Nose to First Door, RH 221 Control Cabin, LH 232 Passenger Cabin - First to Second Door, RH 242 Passenger Cabin - Second to Third Door, RH 244 Area Above Ceiling, RH 252 Passenger Cabin Third to Fourth Door, RH 254 Area Above Ceiling, RH
C.
Prepare for Inspection
(1)
Remove the landing gear control handle module (Ref 32-31-01/401).
S 016-003
(2)
Remove the passenger cabin ceiling panels that follow (Ref 25-22-01/401):
(a)
Ceiling panels forward of the first door
(b)
Right hand ceiling panels between the first and second doors
(c)
Right hand ceiling panels between the second and third doors
S 016-002
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747-400
MAINTENANCE MANUAL
SEE A STRUCTURE SCREW CASE ATTACH MODULE
CONNECTOR CONTROL HANDLE
PIN ALIGNMENT
CONTROL ROD FACE PLATE HANDLE
QAUDRANT
A
Landing Gear Mechanical Control Path Inspection
(Inside Pressurized Area)
Figure 601
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747-400 MAINTENANCE MANUAL
S 016-001
(3)
Remove the right hand sidewall lining doorway panel just aft of the third door (Ref 25-21-03/401).
D.
Examine Landing Gear Mechanical Controls for Condition and Wear
S 216-004
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