C. Mechanical Interfaces
(1) Bundle routed above or below an obstacle
Measure the distance between the bundle and the obstacle. The
distance must be more than:
-10 mm (0.3937 in.) if the bundle is routed above the obstacle
-5 mm (0.1968 in.) if the bundle is routed below the obstacle
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Mechanical Interfaces
Figure 002
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If the distance is less than these values:
-Apply teflon adhesive tape on the structure.
(2) Bundle at level of a fixed clamp (Ref. Fig. 003) Measure the distance between the bundle and the obstacle. The distance must be more than 5 mm (0.1968 in.).
If the distance is less than 5 mm (0.1968 in.):
-Apply teflon adhesive tape on the structure.
(3) Bundle routed through a structure hole (Ref. Fig. 003) Measure the distances D1 and D2 between the bundle and the struture. D1 must be more than 20 mm (0.7874 in.) and D2 must be more than 15 mm (0.5905 in.).
If the distances are less than these values, install a protection on the edge of the hole with silicone extrusion NSA360002 or equivalent.
____
NOTE : If you cannot use the methods given in steps (1), (2) and (3) for the protection of the structure, do these steps: In the pressurized zones:
-
protect the bundle with a velcro sleeve NSA0507 attached with cable ties. In the non-pressurized zones:
-
protect the bundle with a split sleeve attached with cable ties.
(4) Bundle attached with a movable clamp Measure the distance between the bundle and the structure. The distance must be more than 10 mm (0.3937 in.).
If the distance is less than 10 mm (0.3937 in.):
-turn the clamp to a different direction to prevent interference with the structure;
-distribute the extra length. If you cannot do these steps, protect the structure with teflon adhesive tape.
(5) Loose conduits that touch the structure or another component (Ref. Fig. 004)
Measure the distance between the conduit and the structure. The distance must be more than or equal to 10 mm (0.3937 in.).
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Mechanical Interfaces
Figure 003
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Mechanical Interfaces
Figure 004
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If the distance is less than 10 mm (0.3937 in.), attach the conduits together with a tie NSA935401 and install a block NSA5586 to prevent rubbing.
(6) Cable connected to a terminal Measure the distance between the terminal and the structure. The distance must be more than 10 mm (0.3937 in.).
If the distance is less than 10 mm (0.3937 in.) , change the direction of the terminal to prevent a possible interference with the structure.
If you cannot do this step, bend the terminal
(Ref. Fig. 004)
(7) Bonding braid and wiring Make sure that the bonding braid does not touch the wiring. If it does, turn the braid terminal to prevent interference between the bonding braid and the wiring.
____NOTE : Do not use this repair procedure for the braids that move.
If you cannot do this step, add a PTFE heat-shrink sleeve NSA937210 to the bonding braid.
D. Defective length
(1)
Extra length on technical and standard cabin furnishings harnesses The cable extra length is necessary for:
-connector removal/installation
-contact locking/unlocking
-drip loop. The extra length must be between 30 mm (1.1811 in.) and 50 mm (1.9685 in.) . If the extra length is more than 50 mm (1.9685 in.) , distribute the length along the harness to get the 50 mm (1.9685 in.) value. If you cannot distribute the extra length along the harness, cut the harness to the required length.
(2)
Extra length on "version" cabin furnishings harnesses For these harnesses, the extra length is sufficient to adapt to different versions of cabin layout. If the extra length is more than 50 mm (1.9685 in.) , make a loop and if necessary, install a dual support.
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E. Braided sheaths Move your hand along the sheath to find broken braid wires. A maximum number of 3 broken wires is permitted. If more, change the sheath.
F. Connectors
(1)
To prevent contact deterioration when you connect the plug connectors, push the dummy contacts to make sure that they are engaged correctly.
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