(4)
 Put an adjustable access platform in position at zone 824.

 (5)
 Open the avionics compartment door 824 (Ref. TASK 52-41-00-010-002).

 (6)
 Remove the avionics-compartment floor panels (Ref. TASK 53-12-13-000-001).

R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 4. Procedure
_________
R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 53-1143 For A/C 001-003, Subtask 53-19-00-710-050
 A. Inspection
 (Ref. Fig. 602/TASK 53-19-00-991-002)

 (1) In the avionics compartment:
 (a) Use a flashlight to make sure that the drainage pipe connectors on the outputs of the fluid collector are in the correct condition.
R  EFF : 001-049, 054-099, 101-149, 151-199, 53-19-00Page 606 201-299, 301-399, 401-499, Aug 01/05
 CES

 Cockpit Drainage Pipe Figure 602/TASK 53-19-00-991-002 
R  EFF : 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,  53-19-00 Page 607 Aug 01/05
 CES 

 (b)
 Do a detailed visual inspection of the cockpit drainage pipe:

 -fill the fluid collector with water and do a check of the drainage pipe for leaks.

 (c)
 If the drainage pipe is blocked, flush the drainage pipe with water.

R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 5. Close-up
________
R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 53-1143 For A/C 001-003, Subtask 53-19-00-410-054
 A. Close Access
 (1)
 Install the collector grid (Ref. TASK 53-19-41-400-001).

 (2)
 Install the avionics-compartment floor panels (Ref. TASK 53-12-13-400-001).

 (3)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (4)
 Close the avionics compartment door 824 (Ref. TASK 52-41-00-410-002).

 (5)
 Close the FWD passenger/crew door 831 (841) (Ref. TASK 52-10-00-410-001).

 (6)
 Remove the access platform(s).

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 CES  **ON A/C ALL

 TASK 53-19-00-710-003
 Operational Check of Piston Type Drain Valves in Lower Fuselage Shell from Outside WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
 START A TASK ON OR NEAR:

 -
THE FLIGHT CONTROLS

 -
THE FLIGHT CONTROL SURFACES

 -
THE LANDING GEAR AND THE RELATED DOORS

 -COMPONENTS THAT MOVE.
 1.
 Reason for the Job

__________________
 Refer to the MPD TASK: 531900-03

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 2 m (6 ft. 7 in.)
 No specific 1 PROBE - NON METALLIC, FLEXIBLE

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 001-049, 051-099, 101-149, 201-299,
 53-19-00-991-003 Fig. 603 R **ON A/C 151-199, 401-499,
 53-19-00-991-003-B Fig. 603A
 EFF : ALL
53-19-00Page 609

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 301-399,
 53-19-00-991-003-A Fig. 603B
 **ON A/C ALL

 3. Job Set-up
__________
 Subtask 53-19-00-010-056

 A. Get Access
 (1) Put the access platform in position.
 4. Procedure
_________
 Subtask 53-19-00-710-052

 A. Inspection Procedure
 **ON A/C 001-049, 051-099, 101-149, 201-299,

 (Ref. Fig. 603/TASK 53-19-00-991-003) R **ON A/C 151-199, 401-499,
 (Ref. Fig. 603A/TASK 53-19-00-991-003-B)
 **ON A/C 301-399,

 (Ref. Fig. 603B/TASK 53-19-00-991-003-A)
 EFF : ALL
53-19-00Page 610

 Piston-Type Drain Valves Figure 603/TASK 53-19-00-991-003 
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