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 **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
 (5) Switch Mechanism
 The switch mechanism is installed in the lower part of the cargo door at FR53. This mechanism includes the target lever with the related target and the link assy.
 The target lever is attached on the support fitting which is riveted on the frame structure. The upper fork end of the link assy is installed on the lever of the drive shaft and its lower fork end on the target lever.
 The link assy transmits the movement of the drive shaft to the target lever. The target moves to or away from the proximity sensor 32WV which is installed below the door sill of the fuselage.
R **ON A/C 151-199, 401-499,
 (5) Switch Mechanism
 The switch mechanism is installed in the lower part of the cargo door at FR56. This mechanism includes the target lever with the related target and the link assy.
 The target lever is attached on the support fitting which is riveted on the frame structure. The upper fork end of the link assy is installed on the lever of the drive shaft and its lower fork end on the target lever.
R 1EFF : ALL 1 52-32-00Page 56 1 1 Aug 01/05 1 1 1CES 1 The link assy transmits the movement of the drive shaft to the target lever. The target moves to or away from the proximity sensor 32WV which is installed below the door sill of the fuselage.

 **ON A/C ALL
 5. Operation
_________
 **ON A/C 001-049, 053-099, 101-105, 151-199, 201-220,

 (Ref. Fig. 007)
 **ON A/C 051-052,

 (Ref. Fig. 007A)
 **ON A/C 106-149, 221-299, 301-399,

 (Ref. Fig. 007B) R **ON A/C 401-499,
R (Ref. Fig. 007C) R **ON A/C ALL
 (Ref. Fig. 008)
 **ON A/C 001-049, 053-099, 101-105, 151-199, 201-220,

 A. Release Mode
 To release the cargo door mechanism, pull the door handle away from the cargo door. To get access to the door handle, the operator pushes the spring-loaded handle flap automatically inboard. This releases the door handle from the catch hook of the door structure.
 When the door handle is pulled up to the 65 degree position, the subsequent occurs:
 1EFF : ALL 1 52-32-00Page 57 1 1 Aug 01/05 1 1 1CES 1

 Function of Latching and Locking Mechanism Figure 007 (SHEET 1)
R 1EFF : 001-049, 053-099, 101-105, 151-199, 1 52-32-00Page 58 1201-220, 1Aug 01/05 1 1 1CES 1

 Function of Latching and Locking Mechanism Figure 007 (SHEET 2)
R 1EFF : 001-049, 053-099, 101-105, 151-199, 1 52-32-00Page 59 1201-220, 1Aug 01/05 1 1 1CES 1

 Function of Locking Mechanism
 Figure 007A
 1EFF :  051-052,  1  52-32-00 Page 60 
1  1  Aug 01/05
 1  1
 1CES  1

 

 INTENTIONALLY BLANK

 1 1
52-32-00Page 61
1 1 Aug 01/05 1 1 1CES 1

 Function of Latching and Locking Mechanism
 Figure 007B (SHEET 1)

 1EFF : 106-149, 221-299, 301-399, 1 52-32-00Page 62 1 1 Aug 01/05 1 1 1CES 1

 Function of Latching and Locking Mechanism
 Figure 007B (SHEET 2)

 1EFF : 106-149, 221-299, 301-399, 1 52-32-00Page 63 1 1 Aug 01/05 1 1 1CES 1R Function of Latching and Locking Mechanism R Figure 007C (SHEET 1)

 1EFF : 401-499, 1 52-32-00Page 64 1 1 Aug 01/05 1 1 1CES 1R Function of Latching and Locking Mechanism R Figure 007C (SHEET 2)

 1EFF : 401-499, 1 52-32-00Page 65 1 1 Aug 01/05 1 1 1CES 1

 Function of Interlock Mechanism
 Figure 008
 1EFF :  ALL  1  52-32-00 Page 66 
1  1  Aug 01/05
 1  1
 1CES  1

 

 -
the door handle engages with the Maltese-cross lock to operate the linkage mechanism. Its control rod then turns the locking shaft so that the lock cams move away from the recess of the latching hooks,

 -
the drift pin lever moves up and operates the linkage mechanism. The control rods transmit the movement through the housing assy and the bearing assy to the connection rods. They move the drift pins which retract from the pockets of the fuselage frames.

 -
the vent door lever operates the connection rod which turns the drive shaft of the gear box. The output shaft of the gear box also turns and moves the drawbar which opens the vent door. The drive shaft operates the link assy at the same time so that the target lever moves away from the door sill. The related target does not operate the proximity switch 32WV (Ref. 52-71-00).

 **ON A/C 051-052,
 A. Release Mode
 To release the cargo door mechanism, pull the locking handle away from the cargo door. To get access to the locking handle, the operator pushes the handle flap automatically inboard. This operation releases the hook of the flap mechanism and the locking handle is movable.
　
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