Wire Repairs Flashcards
Is there a preferred repair to a splice?
Yes, replace the wire
What is the limit on splicing for a wire?
3, excluding production ones in wiring diagrams
What must be done if multiple wires in a loom need to be spliced?
The splices must be in staggered, and no splices can overlap
Can splicing be a allowable repair for engine harness and fire wires?
Yes but only until the next maintenance is done
How would single conductor wires with chafing or damaged insulation be repaired?
Spliced if possible
Can wires be rerouted to prevent future damage?
If necessary
When would heat damaged wire be changed?
When insulation changes colour
What can affect the type of repair for a shielded cable?
Damage type
What must be ensured when repairing a shielded cable?
Shield must be fully closed and electrically continuous around repair area
What restrictions are there when taping shielded cables?
Fluid resistant tape out side pressurised area
Grade D insulation tape for high temperature areas
Where can splices not be installed?
In metal or flexible tubes In 12 inches of termination device Under clamps Fuel tanks Frequently bent wire harness
Besides location, what other restrictions are there when splicing?
No more than two splices in any segment normally
Can not splice to save scrap wire
What is the usual way of dealing with damaged coaxial cables and why?
Replace them to maintain original impedance value
If done what is used for repairing coaxial cables?
Plug and receptacle, with a maximum of two additional disconnects
What systems coaxial cables must always be replaced?
Long range altimeter
Glide slope
Any repaired cables
What must be done with all undesignated wires?
Dead end with caps or sleeves
What range does the dead ending have to be done within near connectors?
4 to 6 inches
What must be done after dead ending?
Wrapped, tied, and stowed near unused termination
Do stowed wires need to be visible outside the bundle?
Yes
What states the procedure for dead ending configurations such as wires, cables,and terminals?
SWPM 10-10-11
What is the cause of a main proportion of aircraft faults?
Poor connections from normal wear and tear
What can be done to ensure high quality connections?
Correct tools
Correct technique
Correct terminations
What are the main precautions for tooling when stripping back wires?
Adjust automatic tools carefully
Use appropriate blade for the right thickness of insulation
Use a knife for stripping down coaxial cables.
What precautions should be taken for the technique of stripping wires?
Hold the wire perpendicular to the cutter
Ensure insulation is cut clean
Hand cut lengths of 3/4 inch or more in multiple parts
Scratch coaxial outer layer without damaging the shield
