In usual operation the rapid-decompression panels form part of the cargo compartment linings.
If a rapid-decompression occurs in the cargo compartment, the higher air pressure pushes on the rapid-decompression panels. The shaped end of the latch pushes against the edge of the cut-out and causes the latch to move into the open position. The released rapid-decompression panels are blown rapidly into the cargo compartments (BLOW-IN). The higher air pressure can flow from the cabin to the cargo compartment.
If a rapid-decompression occurs in the cabin, the higher air pressure pushes on the rapid-decompression panels. The laminated-skin border folds away at the place where the honeycomb filling starts. The cuts in the corners help to accelerate this process. The panels are released and blown rapidly out from the cargo compartments (BLOW-OUT). The higher air pressure can flow from the cargo compartment to the cabin.
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R Rapid Decompression Panels - Operation Figure 006 (SHEET 1)
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R Rapid Decompression Panels - Operation Figure 006 (SHEET 2)
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B. Dado Panels (Ref. Fig. 007)
In usual operation the dado panels let the air flow between the Cargo compartments and the cabin.
If a rapid-decompression occurs in the cargo compartment, the higher air pressure flows under the decorative panels. The covers channel the flow to the decompression plates and pushes them in the outboard direction. The higher air pressure can flow rapidly from the cabin to the cargo compartment.
If a rapid-decompression occurs in the cabin, the higher air pressure pushes the decompression plates in the inboard direction. The covers channel the flow under the decorative panel. The higher air pressure can flow rapidly from the cargo compartment to the cabin.
C. Air Grills
In usual operation the air grills let the air move freely to and from the housings (stowages and lavatories).
If a rapid-decompression occurs, the air will flow rapidly through the air grills into the cabin.
D. Cockpit Door
In usual operation the cockpit door permits access to and from the
cockpit to the cabin. During flight the cockpit door is closed and
locked.
If a rapid-decompression in the cabin occurs, the cockpit door stays closed and locked. The higher air pressure in the cockpit flows through various ventilation paths, into the cabin and avionics compartment. The door frame, frame attachments and lavatory wall are strengthened to resist the initial high pressure, until the higher air pressure has decreased.
If a rapid-decompression occurs in the cockpit, the avionics compartment or the FWD Cargo compartment, the sensing channel measures the rapid fall in pressure. The control unit immediately releases (5 ms) the cockpit door locking mechanism. The higher air pressure, pushes the cockpit door open to the cockpit, and flows rapidly from the cabin into the cockpit.
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Dado Panels - Operation Figure 007
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Cockpit Door - Operation Figure 008 (SHEET 1)
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Cockpit Door - Operation Figure 008 (SHEET 2)
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DECOMPRESSION PANEL - REMOVAL/INSTALLATION__________________________________________
TASK 25-68-41-960-001
Replacement of the Decompression Panels
1. Reason for the Job__________________
Self Explanatory
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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