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Waste tank enclosure panels
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Main equipment center bulkhead liner.
Latches and quarter-turn fasteners attach the station 2062 end wall to the structure.
Quarter-turn fasteners attach the waste tank enclosure panels to the structure.
The access door to the main equipment center has a hinge on the outboard side. A door restraint holds the door open. The door restraint folds to let the door close. Latches hold the door closed. Quarter-turn fasteners attach the stationary main equipment center bulkhead liners to the structure.
The main equipment center access door and all the panels have built-in seals.
Location
The station 2062 end wall is at the aft end of the bulk cargo compartment.
The waste tank enclosure panels are on the left side of the bulk cargo compartment.
The main equipment center bulkhead liner is at the forward end of the forward cargo compartment.
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LOWER LOBE CARGO COMPARTMENT -NOMEX HONEYCOMB PANELS
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LOWER LOBE CARGO COMPARTMENT -EQUIPMENT RACK ACCESS DOORS
Physical Description
These equipment rack access doors are made from Nomex honeycomb sandwich material:
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E6 equipment rack
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E17 equipment rack
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E5 equipment rack
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E16 equipment rack.
The doors have a hinge on the inboard side. Quarter-turn fasteners hold the doors closed. The access doors have built-in seals.
Location
The E6 rack is at the aft edge of the aft cargo door opening. The E17 rack is at the forward edge of the aft cargo door opening.
The E5 rack is at the aft edge of the forward cargo door opening. The E16 rack is at the forward edge of the forward cargo door opening.
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LOWER LOBE CARGO COMPARTMENT -EQUIPMENT RACK ACCESS DOORS
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LOWER LOBE CARGO COMPARTMENT -DECOMPRESSION PANELS
Purpose
Decompression panels prevent fuselage structural damage if there is sudden decompression of the passenger compartment.
Physical Description
The decompression panel has these parts:
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Frame
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Vent
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Seal
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Blowout panel.
The blowout panel is a thin sheet of fiberglass held in the frame by seals. The vent is an aluminum grate which protects the blowout panel from impact. Bolts (not shown) hold the vent to the frame.
Screws go through the frame to hold the decompression panel in place. Tape seals the frame to the cargo compartment liner.
Location
Two decompression panels are in the forward cargo compartment, one on the left side and one on the right side. Two panels are in the aft cargo compartment on the left side.
Functional Description
The blowout panel normally seals air inside the cargo compartment. If there is a rapid decompression of the passenger compartment, differential pressure pushes the blowout panel from the frame. Pressure in the cargo compartment quickly becomes equal to the reduced pressure in the passenger compartment. This prevents damage to the passenger compartment floor from too much pressure against the underside.
Training Information Point
The decompression panel must be air-tight for proper fire protection; the panel must be installed and sealed correctly. The blowout panel must be held to the frame on all four sides by the seals.
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LOWER LOBE CARGO COMPARTMENT -DECOMPRESSION PANELS
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LOWER LOBE CARGO COMPARTMENT -FLOOR PANELS AND WALKWAYS
Purpose
Walkways make it easy for the ground crew to move in the cargo compartments.
The smoke containment panels and the aft end of the walkways make a smoke barrier between the cargo compartments and other areas of the airplane.
Physical Description
Walkways are made of fiberglass-faced Nomex honeycomb core sandwich panel material. Countersunk screws attach the panels to the support structure.
The smoke containment panels in the forward cargo compartment are made of laminated fiberglass with a layer of tedlar film.
The smoke containment panels in the aft cargo compartment are the same material as the floor panels.
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