**ON A/C 001-049, 101-105,
 (Ref. Fig. 004)
 **ON A/C 051-099, 106-149, 201-299,
 (Ref. Fig. 004A)
 **ON A/C 151-154,
 (Ref. Fig. 004B)
R **ON A/C 155-199, 401-499,
 (Ref. Fig. 004C)
 **ON A/C 301-399,
 (Ref. Fig. 004D)
 EFF : ALL
53-20-00Page 11

 Cabin Floor Structure - Section 13/14 Figure 004 
R  EFF :  001-049, 101-105,  53-20-00 Page 12 May 01/05
 CES 

R  Cabin Floor Structure - Section 13/14 Figure 004A 
R  EFF :  051-099, 106-149, 201-299,  53-20-00 Page 13 May 01/05
 CES 

R  Cabin Floor Structure - Section 13/14 Figure 004B 
R  EFF :  151-154,  53-20-00 Page 14 May 01/05
 CES 

 Cabin Floor Structure - Section 13/14 Figure 004C 
R  EFF :  155-199, 401-499,  53-20-00 Page 15 Aug 01/05
 CES 

 Cabin Floor Structure - Section 13/14 and Section 14A Figure 004D (SHEET 1) 
R  EFF :  301-399,  53-20-00 Page 16 May 01/05
 CES 

 Cabin Floor Structure - Section 13/14 and Section 14A Figure 004D (SHEET 2) 
R  EFF :  301-399,  53-20-00 Page 17 May 01/05
 CES 

 **ON A/C ALL

 The structure of the cabin floor comprises:
 -cross beams,
 -seat tracks,
 -dummy seat tracks,
 -
floor edgings,

 -
floor panels.

 (1) Cross Beams The cross beams consist of aluminium alloy extruded sections riveted to the frames in the zones of stringers 23 and 24. They reinforce the frames and increase fuselage stability. The cross beams are supported by two struts on either side of the fuselage. These struts are riveted to the lower part of the frame level with stringers 32.
 **ON A/C 001-049, 101-105, 151-154,
 (2) Seat Tracks Five seat tracks are bolted on to the cross beams. They provide the mounts for the passenger seats and support the floor panels. The seat tracks consist of aluminium alloy extruded sections.
R **ON A/C 051-099, 106-149, 155-199, 201-299, 301-399, 401-499,
 (2) Seat Tracks Four seat tracks are bolted on to the cross beams. They provide the mounts for the passenger seats and support the floor panels. The seat tracks consist of aluminium alloy extruded sections.
 **ON A/C ALL
 (3)
 Dummy seat tracks The floor panels in the center part of the floor are supported by two dummy seat tracks bolted on to the cross beams. These dummy seat tracks consist of aluminium alloy extruded sections.

 (4)
 Floor Edgings Two Z-section edgings secured to the cross beams support the sides of the cabin floor. An assembly of rods, secured by rivets, connects stringer 26 to the floor edging along the entire length of the fuselage.

 EFF : ALL
53-20-00Page 18

 (5) Floor panels The floor is made up of NOMEX honeycomb sandwich panels covered with a glass fiber skin protected with Alutisse strip. The panels are screwed on to the seat tracks, the dummy seat tracks and the floor edgings. The center sections of the panels are supported between the seat tracks dummy seat tracks and the edgings by supports bolted on to the cross beams.
 E. Structure of Cargo Compartment Floor (Ref. Fig. 003) The structure of the cargo compartment floor consists of cross beams formed from folded sheet riveted to the frames. The cross beams are supported by folded sheet struts riveted to the lower part of the frames.
 F. Cabin Windows
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 (Ref. Fig. 001)
R **ON A/C 151-199, 401-499,
 (Ref. Fig. 001A)
 **ON A/C 301-399,
 (Ref. Fig. 001B, 002)
 **ON A/C ALL
 The drop-forged frames in which the cabin windows are installed, are riveted on both sides of the fuselage between stringers 14 and 18. There are no stringers at window level.
 G. Cargo Door Frame
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 (Ref. Fig. 001)
 EFF : ALL
53-20-00Page 19

R **ON A/C 151-199, 401-499,
 (Ref. Fig. 001A)
 **ON A/C 301-399,
 (Ref. Fig. 001B)
 **ON A/C ALL
 The sides of the cargo door opening are formed by frames 24A and 28.
 Frame 24A is riveted to frame 24 on attach-fittings.
 The top and bottom zones of the door are formed by stringers 23 and 29.
 The top of the door opening is reinforced by the lower sections of frames
　
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