(2)
Remove the safety barriers.
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(3)
Remove the warning notice(s).
(4)
Remove the access platform(s).
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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TASK 57-20-00-200-002
Detailed Inspection of Outer Wing, Bottom Skin Lower Surface at Fuel Pump Apertures between RIB1 and RIB2
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: 572054-01
NOTE : This task must be done with the fuel pumps 21QA (26QA) and 25QA
____
(22QA) removed.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific compressed air jet No specific safety barriers No specific warning notices No specific access platform 2.8 m (9 ft. 2 in.) 98D27803500001 1 TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 11-026 GB DEF-STAN 68-148/1
SOLVENT GENERAL PURPOSE (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 -------------------------------------------------------------------------------
28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 28-21-51-000-001 Removal of the Fuel Pumps 21QA(26QA) and 25QA(22QA) 28-21-51-400-001 Installation of the Fuel Pumps 21QA(26QA) and
25QA(22QA) ASRM 572100 (for corrective action) R 57-20-00-991-002 Fig. 603
3. Job Set-up
__________
Subtask 57-20-00-941-083
A. Safety Precautions
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
(1)
Obey the fuel safety precautions (Ref. TASK 28-10-00-910-001).
(2)
Install the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER (98D27803500001) on the flap/slat control lever.
(3)
Put warning notices in the cockpit to tell persons not to operate the flaps or slats.
(4) Put the safety barriers in position.
Subtask 57-20-00-010-051
B. Get Access
(1)
Put the access platform in position below zone 540(640).
(2)
Remove the fuel pumps 21QA(26QA) and 25QA(22QA) (Ref. TASK 28-21-51-000-001).
4. Procedure
_________ R (Ref. Fig. 603/TASK 57-20-00-991-002) Subtask 57-20-00-110-079
A. Preparation for Inspection WARNING : USE A PROTECTIVE EYE SHIELD/GOGGLES WHEN YOU USE COMPRESSED
_______ AIR. DEBRIS AND/OR HIGH PRESSURE AIR CAN DAMAGE YOUR EYES.
(1) Use a clean MISCELLANEOUS (Material No. 19-003), made moist with CLEANING AGENTS (Material No. 11-026) and a compressed air jet to clean:
-
the edges of the two fuel pump openings (1)
-
the wing bottom skin, lower surface (2), adjacent to the fuel pump openings (1).
Subtask 57-20-00-210-051
B. Detailed Inspection of Outer Wing, Bottom Skin Lower-Surface at Fuel Pump Apertures, between RIB1 and RIB2
(1) Examine the outer-wing, bottom skin fuel pump openings (1) and the adjacent surface area (2). Make sure that:
-there is no damage to the edges of the openings (1)
-
the surface area (2) has no corrosion or damage
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