(2)
 Remove the access platform(s).

 (3)
 Remove the warning notice(s).

 PYLONS - INSPECTION/CHECK
_________________________
 TASK 54-50-00-200-001
 General Inspection of the Pylon Drain System
 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: 545000-01
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific flashlight
 No specific mirror
 No specific warning notice
 No specific access platform 1.7 m (5 ft. 7 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R 54-51-21-000-001 Removal of the Pylon Lateral Access-Doors R 54-51-21-400-001 Installation of the Pylon Lateral Access-Doors 54-52-00-300-001 Repair of the CAF4 Sealant in the Pylon Cantilever Zone "A" R 78-30-00-081-041 Make the Thrust Reverser Serviceable after Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
 Maintenance
 54-50-00-991-008 Fig. 601
 54-50-00-991-018 Fig. 602

 3. Job Set-up
__________

 Subtask 54-50-00-941-051
 A. Safety Precautions
 (1)
 On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2)
 Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3)
 On the overhead maintenance panel 50VU:

 (a)
 Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b)
 Put a warning notice to tell persons not to energize the FADEC 1(2).

 Subtask 54-50-00-040-050
 B. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 54-50-00-010-051
 C. Get Access
 (1) Put an access platform in position.
 (2) Remove the pylon lateral access-doors: R (Ref. TASK 54-51-21-000-001)
 -
For the left pylon: 415AL, 415BL.

 -
For the right pylon: 425AR, 425BR.

 (3) Remove the panels:
 -
For the left pylon: 413AL, 471AL, 471BL, 475AL.

 -
For the right pylon: 423AL, 482AR, 482BR, 486AR.

 4. Procedure
_________

 Subtask 54-50-00-210-051
 A. Inspection of the Pylon Drains and the CAF4 Sealant in the Cantilever Zone "A" (Ref. Fig. 601/TASK 54-50-00-991-008, 602/TASK 54-50-00-991-018) 
R  (1) Inspection of the pylon drains
 (a) Examine the drain inlets.
 (b) Make sure that the drain inlets are not blocked. Use a flashlight and a mirror, if necessary.
 (c) Examine the lines to make sure that there are no cracks, marks, corrosion, or other damage.
 (d) Make sure that the lines are correctly attached. 
R  (2) Inspection of the CAF4 sealant
 (a) Take a flashlight and a mirror.
 (b) Do a detailed visual inspection of the bottom surface of the cantilever zone "A". 
R R  (c) Make sure that there is no contamination by kerozene or hydraulic fluid of the CAF4 sealant.
 1_ If the volume of the sealant is increased and the sealant is brittle, there is contamination by kerozene.
 2_ If the volume of the sealant is not changed and its color is yellow, there is contamination by hydraulic fluid.
 (d) If you find contamination, repair the CAF4 sealant (Ref. TASK 54-52-00-300-001).
 5. Close-up________
 Subtask 54-50-00-440-050
 A. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).

 Pylon Drains Figure 601/TASK 54-50-00-991-008
 1EFF : 1 1R 1CES  ALL  1 11 1 54-50-00 Page 604 Feb 01/00

R R  CAF4 Sealant - Pylon Cantilever Figure 602/TASK 54-50-00-991-018
 1EFF : 1 1 1CES  ALL  1 111 54-50-00 Page 605 Aug 01/01
　
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