(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 57-21-00-650-082
B. Fuel Configuration
(1)
Defuel the applicable fuel tank (Ref. TASK 28-25-00-650-001).
(2)
Drain the remaining fuel from the applicable fuel tank (Ref. TASK 28-25-00-650-003).
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 57-21-00-010-071
C. Get Access
(1)
Put the adjustable access platform in position below the wing fuel tank, zones 540 (640) and 550 (650).
(2)
Remove the applicable access panels (Ref. TASK 28-12-45-000-001) (Ref. TASK 28-12-47-000-001) (Ref. TASK 57-27-11-000-002) and (Ref. TASK 28-10-00-910-002):
-
for the left wing, remove 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB
-
for the right wing, remove 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB.
**ON A/C 301-399,
Subtask 57-21-00-010-071-A
C. Get Access
(1)
Put the adjustable access platform in position below the wing fuel tank, zones 540 (640) and 550 (650).
(2)
Remove the applicable access panels (Ref. TASK 57-27-11-000-002) (Ref. TASK 28-12-45-000-001) (Ref. TASK 28-12-46-000-001) (Ref. TASK 28-12-47-000-001) and (Ref. TASK 28-10-00-910-002):
-
for the left wing, remove 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB
-
for the right wing, remove 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB.
**ON A/C ALL
4. Procedure
_________ R (Ref. Fig. 629/TASK 57-21-00-991-031) Subtask 57-21-00-110-078
A. Preparation for Inspection
(1) Use a clean MISCELLANEOUS (Material No. 19-003), made moist with CLEANING AGENTS (Material No. 11-026), to clean the bottom skin stringers 7, 8 and 11 (RIB18 thru RIB27).
Subtask 57-21-00-210-081
B. Inspection
(1) Examine the bottom skin stringers 7, 8 and 11 (RIB18 thru RIB27). 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.
________
5. Close-up
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 57-21-00-410-071
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the applicable access panels (Ref. TASK 28-12-45-400-002) (Ref. TASK 28-12-47-400-001) (Ref. TASK 57-27-11-400-002) and (Ref. TASK 28-10-00-910-002):
-
for the left wing, install 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB
-
for the right wing, install 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB.
R Outer Wing Bottom Skin Stringers - RIBS 18 thru 27 Figure 629/TASK 57-21-00-991-031
1EFF : 1 1 1CES ALL 1 111 57-21-00 Page A664 Aug 01/05
**ON A/C 301-399,
Subtask 57-21-00-410-071-A
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the applicable access panels (Ref. TASK 57-27-11-400-002) (Ref. TASK 28-12-45-400-002) (Ref. TASK 28-12-46-400-001) (Ref. TASK 28-12-47-400-001) and (Ref. TASK 28-10-00-910-002):
-
for the left wing, install 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB
-
for the right wing, install 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB.
**ON A/C ALL
Subtask 57-21-00-650-083
B. Fuel Configuration
(1) Refuel (Ref. TASK 12-11-28-650-003), defuel (Ref. TASK 28-25-00-650-001) or transfer fuel (Ref. TASK 28-25-00-869-001) as necessary.
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