(2)
Open the forward passenger/crew door 831 841 (Ref. TASK 52-10-00-010-001).
(3)
Remove the lavatories if installed (Ref. TASK 25-41-41-000-001) (Ref. TASK 25-41-42-000-001) (Ref. TASK 25-42-41-000-001).
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(4)
Remove the galleys if installed (Ref. TASK 25-31-41-000-002) (Ref. TASK 25-31-41-000-001) (Ref. TASK 25-32-41-000-001).
(5)
Remove the cabin floor panels from FR24 to FR35 (Ref. TASK 53-22-12-000-001). Get Access
Subtask 53-21-00-110-076
B. Cleaning of the Structure
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) Clean the inspection area with CLEANING AGENTS (Material No. 11-004) and a lint-free cotton cloth MISCELLANEOUS (Material No. 19-003), if necessary.
4. Procedure
_________
Subtask 53-21-00-220-070
A. Inspection
(Ref. Fig. 623/TASK 53-21-00-991-026)
(1)
Do a detailed inspection of the cabin floor structure below and 0.5 m
(1.64 ft.) around the galleys and the lavatories. This inspection is applicable between FR24 and FR35 and includes the seat tracks and cross beams.
(2)
Make sure that there is no:
(a) Corrosion damage:
-If you find corrosion damage, refer to the Structural Repair Manual (Ref. SRM 512200 P.Block 001) for types of corrosion, inspection, removal and corrosion protection.
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(b) Other damage (cracks, scratches, stress, marks, dents, bumps,...):
-If you find other damage, refer to the Structural Repair Manual (Ref. SRM 511100 P.Block 001) for damage classification and corrective action.
Subtask 53-21-00-916-057
B. Application of the Temporary Protection
(Ref. Fig. 623/TASK 53-21-00-991-026)
CAUTION : DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS.
_______ MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET: -ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS. -ON LUBRICATED SURFACES. -IN DRAIN VALVES OR OTHER ORIFICES. TEMPORARY PROTECTION ON OR IN THESE PARTS CAN CAUSE DAMAGE.
(1)
Apply masking paper or masking tape BONDING AND ADHESIVE COMPOUNDS (Material No. 08-074) on the equipment and fittings adjacent to the area.
(2)
Apply a layer of STORAGE PRESERVATION (Material No. 15-005) or STORAGE PRESERVATION (Material No. 15-006) to the inspected area.
(3)
Apply a layer of STORAGE PRESERVATION (Material No. 15-008) or STORAGE PRESERVATION (Material No. 15-007) to the inspection area.
(4)
Remove the masking tape or the masking paper.
5. Close-up
________
Subtask 53-21-00-410-073
A. Close Access
(1)
Install the cabin floor panels from FR24 to FR35 (Ref. TASK 53-22-12-400-001).
(2)
Install the galleys if removed (Ref. TASK 25-31-41-400-002) (Ref. TASK 25-32-41-400-001) (Ref. TASK 25-31-41-000-001).
(3)
Install the lavatories, if removed (Ref. TASK 25-41-42-400-001) (Ref. TASK 25-41-41-400-001) (Ref. TASK 25-42-41-400-001).
(4)
Make sure that the work area is clean and clear of tool(s) and other items.
(5)
Close the forward passenger/crew door 831 841 (Ref. TASK 52-10-00-410-001).
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