(3)  
Aluminum carpet riser panels provide the support for the carpeting which extends up the sidewall from the floor level to the bottom edge of the window panels. Air return grilles are installed in cutouts in the carpet riser panels to provide an exit for cabin conditioning air. The carpet riser panels overlap at each body frame and are attached to the frame with vibration absorbing fasteners.

(4)  
Aluminum lining panels with a stain-resistant decorative covering are installed in the areas around the entry and service doors. These lining panels are attached to structure with screws and quick-release fasteners. In some areas the panel edges are held by retainer strips.

Aug 15/78 25-21-300 Page 1
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

EFFECTIVITY
CARRY - ALL COMPARTMENT INTERIOR

Passenger Cabin Lining and Insulation  515 
25-21-300  Figure 1 (Sheet 1)  Aug 15/78 
Page 2 

BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
EFFECTIVITY
WIDE-BODY LOOK INTERIOR

515  Passenger Cabin Lining and Insulation Passenger Areas 
Aug 15/78  Figure 1 (Sheet 2)  25-21-300 
Page 3 

BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

 Window Shade  515 
25-21-300 Page 4  Figure 2 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  May 20/82 

3.  Ceiling Lining
A.  General
(1)  The cabin ceiling lining consists primarily of the curved ceiling panels. In the forward and aft ends of the cabin the lowered ceilings are installed to provide a flat-ceiling area.
B.  Curved Ceiling Panels
(1)  
The curved ceiling panels cover the area on each side of the cabin between the top of the overhead stowage bins and the air conditioning nozzle that is installed along the center of the passenger cabin. The curved ceiling panels are formed from fiberglass into a shape that gives the ceiling a sculptured or contoured appearance. This shape allows indirect lighting of the cabin with lights installed behind the ceiling panels. These sculptured ceiling panels are separated into groups of two pairs each by the installation of shorter nonsculptured ceiling panels. The length and shape of the ceiling panels match that of the overhead stowage bins.

(2)  
The inboard edge of each curved ceiling panel is supported by sliding into a channel on the ceiling air conditioning nozzle. The outboard edge is supported by a hinge which will allow the ceiling panel to move outboard and swing down to permit maintenance of the ceiling lights. Each ceiling panel is equipped with a lanyard to limit rotation.

C.  Lowered Ceiling Panels
(1)  
The flat ceiling panels of the forward and aft lowered ceilings consist of a honeycomb core with a fiberglass facing on each side. The inboard surface is covered with a decorative material.

(2)  
On-airplanes with Wide-Body Look Interiors, small curved panels are installed along each side of the forward lowered ceiling in areas over the overhead stowage compartments. These panels are similar in shape to the main cabin curved ceiling panels to blend with the stowage compartments and to provide indirect lighting in some sections of the lowered ceiling area. Those panels equipped with ceiling lights are hinged in the same manner as the main cabin curved ceiling panels.

(3)  
An end cap is installed across the aft end of the forward lowered ceiling and across the forward end of the aft lowered ceiling. The end caps blend the flat ceiling into the curved ceiling and overhead stowage compartment contours.

515 
Aug 15/78  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  25-21-300 Page 5 

D.  Fire Barrier (Passenger/Cargo Convertible Airplanes)
(1)
Fabric fire barriers are installed in the forward and aft areas of the cabin as follows:

(a)  
Across cabin above forward pair of curved ceiling panels.

(b)  
Above overhead stowage compartments and passenger service units along each side of cabin in main cargo door area and just forward of aft lowered ceiling.

(2)  
Fire barriers provide a closure for areas where ceiling panels, stowage compartments, or service units are removed during cargo conversion. Fire barriers are attached with velcro tape to lowered ceiling end caps, curved ceiling panels, and overhead structure. Slits and openings are provided in fabric to allow access to barrier net fittings and service unit connections.

4.  Ceiling Support Structure
A.  Ceiling Center Support
　
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