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 TASK 57-20-00-200-019
 Detailed Visual Inspection of the Outer Wing Bottom Skin Lower Surface at the Front Spar, masked by the Pylon Fairing and Visible Portion of Pylon ....
 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.
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 572031-01 Detailed visual inspection of the outer wing bottom skin lower surface at the front spar, masked by the pylon fairing and the visible portion of the pylon reinforcing plate.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers No specific warning notices No specific access platform 2 m (6 ft. 7 in.) 98D27803500001 1 TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 11-004  USA MIL-T-81533 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM) (Ref. 20-31-00)
 Material No. 19-003  USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
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 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ASRM 572100 (for corrective action) R 57-20-00-991-020 Fig. 619
 3. Job Set-up
__________
 Subtask 57-20-00-941-068

 A. Safety Precautions
 (1)
 Install the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER (98D27803500001) on the flap/slat control lever.

 (2)
 Put warning notices in the cockpit to tell persons not to operate the flaps or slats.

 (3) Put the safety barriers in position.
 Subtask 57-20-00-010-067

 B. Get Access
 (1)
 Put the access platform in position below the zone 521(621).

 (2)
 Remove the applicable access panels:

 -
for the left wing, remove 471AL and 472AR

 -
for the right wing, remove 481AL and 482AR.

 4. Procedure
_________
R (Ref. Fig. 619/TASK 57-20-00-991-020)
 Subtask 57-20-00-110-069
 A. Preparation for Inspection
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 (1) Use a clean MISCELLANEOUS (Material No. 19-003), made moist with CLEANING AGENTS (Material No. 11-004), to clean the bottom skin lower-surface at the front spar:
 -
in the area closed by the pylon fairing

 -
in the area of the pylon reinforcing plate.

 Subtask 57-20-00-210-065
 B. Detailed Visual Inspection of the Outer-Wing Bottom Skin Lower-Surface at the Front Spar, Masked by the Pylon Fairing and the Visible Portion of the Pylon Reinforcing Plate
 (1) Examine the bottom skin lower-surface at the front spar (in the area closed by the pylon fairing), and in the area of the pylon reinforcing plate. Make sure that:
 -
there is no corrosion or damage

 -
there are no scratches or scores

 -
there are no loose or damaged fasteners

 -the surface protection is in the correct condition.
 NOTE : If necessary, refer to the ASRM (Ref. ASRM 572100) for the
____
 correct repair procedure.

 Details of the Bottom-Skin Lower-Surface at the Front Spar R Figure 619/TASK 57-20-00-991-020
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 5. Close-up
________ Subtask 57-20-00-410-069
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.
　
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