CARGO HANDLING SYSTEM -STOP/LOCK -OPERATION
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CARGO HANDLING SYSTEM -END STOP
General
There are two types of end stops:
*
End stop with vertical restraint
*
End stop without vertical restraint.
All end stops give longitudinal restraint for containers and pallets. End stops with vertical restraint give vertical restraint for pallets and pallet sized containers, LD-7 and LD-11.
Physical Description
The forward cargo compartment uses both types of end stops.
The aft cargo compartment uses only end stops without vertical restraint.
The stops are one piece, fixed (non-retractable) units. Stops with vertical restraint have an anchor fitting.
Location
The end stops mount to the roller trays at each end of the compartments.
The forward cargo compartment has four with vertical restraint at each end.
The forward cargo compartment also has two end stops without vertical restraint in the aft end of the compartment.
The aft cargo compartment has six without vertical restraint at each end.
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777 AIRCRAFT MAINTENANCE MANUAL
CARGO HANDLING SYSTEM -END STOP
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CARGO HANDLING SYSTEM -CARGO SYSTEM CONTROLLER
Purpose
The cargo system controllers (CSCs) give an interface between the cargo handling controls and the cargo handling electrical/ mechanical units. The controllers control the operation and the sequence of operation for the units and give protection to prevent actuator/gear motor overheat and burnout.
Physical Description
The forward and aft CSCs are the same. The CSCs are passively cooled units.
Location
The forward cargo system controller is on the E16-2 shelf.
The aft cargo system controller is on the E17-1 shelf (not shown).
Operation
Controller logic changes with hard-wired programming pins. Pins in the electrical connector of the equipment rack (not shown), tell the controllers which cargo compartment they are in and which system options are active. This lets the controllers adjust for the difference between the forward and aft cargo compartments and for system options. For example, programming pins give this type of information:
* Forward or aft cargo compartment
*
Aft large cargo door
*
Crew rest in place 1
*
Crew rest in place 2
*
No gearmotor devices installed.
Training Information Point
The controllers do not have BITE. To do a test, you operate the system to see if it operates correctly. The controllers do not have an interface with the AIMS.
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CARGO HANDLING SYSTEM -CARGO SYSTEM CONTROLLER
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CARGO HANDLING SYSTEM -OPERATION -CONTROLS
General
Controls for the cargo handling system let you operate the system. The controls for the forward and aft cargo handling systems are almost the same.
These are the controls that you use to operate the systems:
*
Cargo control joystick
*
P24 forward cargo handling control panel or P27 aft cargo handling control panel (not shown)
*
Secondary joystick panel.
Location
Controls for the forward and aft cargo handling systems are near the forward part of the cargo cut out.
The cargo control joystick and the cargo handling control panel, P24 forward system and P27 aft system (not shown) are forward of the door cut out on the exterior.
The secondary joystick panel is in the ceiling of the cargo compartment between the interior cargo door control and cargo handling accessory panel (P35 forward or P39 aft, not shown).
P24 Cargo Handling Control Panels (P27 not shown)
The forward cargo handling control panel has these parts:
EFFECTIVITY
BEJ ALL
*
SYSTEM POWER switch
*
System power LED
*
PDU AFT/FWD switch
*
PDU LEFT/BOTH/RIGHT switch
*
PALLETS/CONTAINERS switch
*
Bay on LEDs
*
BAY OFF switches.
The aft cargo handling control panel (not shown) has the same parts except for the PALLETS/CONTAINERS switch.
The SYSTEM POWER switch is a two-position, ON/OFF switch. This switch lets you set system power to on/off.
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