Following repair actions, how do you check electrical equipment before testing?
Visually
Electrically
Mechanically
Operationally
Which technical order contains inspection and repair information that applies across all aircraft wiring systems?
1-1A-14
1-11A-14
14-1A-1
11-1A-14
When do you use compressed air for cleaning electrical equipment
Only as the last resort
After using dry cleaner
Only when oil is applied
After using chemical cleaners
What is the maximum allowable pressure to use when cleaning electrical equipment with compressed air?
15 psi
20 psi
25 psi
30 psi
To prevent chafing, the slack in a wiring harness between two support points normally should not exceed
1/4 inch
3/8 inch
1/2 inch
5/8 inch
What is the only real cure for wire chafing problems?
Eliminating the need for fasteners
following proper maintenance procedures
Eliminating slack from all wiring harnesses
Eliminating the use of crimped or spliced wires
Which method is not an acceptable way to prevent possible chaffing problems?
Routing coaxial cables in the most direct way possible
Routing wires or bundles parallel to the ribs of the aircraft
Routing wires and bundles at right angles to the ribs of the aircraft
Routing wires and bundles back on themselves and placing the folds inside the bundle
When installing aircraft wiring, you must ensure wires or wire bundles do not come within
1/2 inch of the edge of the hole when routed through a bulkhead opening and when a suitable grommet and clam is installed
1 inch of the edge of a hole when routed through a bulkhead opening and when a suitable grommet and clam is installed
1/2 inch of the edge of a hole when routed through a bulkhead opening and when a suitable grommet and clamp is installed
1/4 inch of the edge of a hole when routed through a bulkhead opening and when a suitable grommet and clamp is installed
Who initiates a one-time inspection if the sampled aircraft indicates a chafing problem or the detected chafing isn an operational safety hazard?
Chief quality insurance inspector
Maintenance group commander
Production superintendent
Squadron commander
A coaxial cable is protected on the outside by a
Braided sleeve
metal braiding
dielectric material
tough outer jacket
What is a primary function of the dielectric in coaxial cables?
Providing a third highly insulated path for signals and low voltage current
Proving a low ohmic value conductor between the center and outer conductors
Maintaining a protective shield over the inner conductor to prevent transient radio frequency signal interference
Maintaining the relative position of the inner conductor inside the outer conductor and therefore keeping the capacitance between the two at a constant value
Which standard defines implementation requirements of the aircraft/store electrical (fiber optic) Interconnection System (AEIS) in aircraft stores?
MIL-STD-1760
MIL-STD-1670
MIL-STD-1060
MIL-STD-760
When working with coaxial cable, you must never step on it, set anything heavy on it, or bend it sharply because doing so will
Begin a weak point for future chaffing to occur
Cause a weak point for future corrosion to occur
Cause a weak point for radio frequency intrusion
Flatten the cable and change its electrical characteristics
When installing a connector on coaxial cable, you must use care in starting the braid clamp nut into a plug or jack body to prevent
Cross-threading
Damage to the center pin
Damage to the center socket
Damage to the cable dielectric
Who should do electrical repairs?
Anyone
Degreed personnel only
Certified personnel only
Qualified personnel only
As a general rule, when you are working on electrical items, they should have the power
Off for testing and on for maintenance
On for testing only
Off
On
When performing measurements on energized circuits, meters should
Not be used
Be held by a helper
Not be held in your hand
Be placed on the equipment tester
When voltage is applied to equipment being repaired, personnel must
Remove all nonessential tools from the workbench
Stay away from the workbench
Keep all tools on hand next to the equipment being repaired
Remove essential tools from the equipment being repaired
What must you do to a salvaged protective boot before you re-install it?
Heat it to restore its pliability
Clean it with a solvent and then heat it to restore its pliability
Clean it with a solvent and then coat it with an adhesive when thoroughly dry
Clean it with a solvent then let non-destructive inspection (NDI) personnel inspect it to verify its structural integrity
When shrinking a protective boot for wiring, work slowly from the
Inside to the outside
Connector to the braid end
Braid end tot he connector
Middle of the connector to either end
What is the only heat gun presently authorized around fueled aircraft?
Electrical motor driven heat guns
Positive pressure, fully contained flame units
Soldering gun mounted fan/heat pump
Compressed air/nitrogen heat gun kit
What do you use to make a spot tie on silicone tape when repairing a wire braid?
Plastic pull-ties
Dacron lacing tape
Nylon lacing tape
Waxed lacing string
The indicating band on the working end of the solderless connector insertion tool determines the
Correct gauge wire to use
Proper size crimp to be made
Correct depth to insert the tool
Proper length to strip the insulation off the wire
You must never use pin insertion tools with burrs or sharp edges because they
Can present the insulation of the wire attached to the pin you are trying to install
Present a hazard to the operator possibly causing laceration tooth fingers or other parts of the hands
Can cut through the grommet wire sealing webs and destroy the environment sealing capabilities of a connector
Can scrape off the letter or number marking on the back of the connector making it more difficult to ensure correct pin insertion
Similar to contact insertion tools, extraction tools for solder less connectors are
Of solid construction
For pin contacts only
For socket contacts only
Of different sizes for each contact
Chaffing is nothing more than some type of constant friction between wiring harnesses and electrical components or between wiring harnesses and the structure to which they are attached.
Interior chaffing of a wire is the most common form of chaffing
the wings weapons manager monitors and tracks instances of wire, harness, and metal lines/tube chaffing
You can interchange cables with different types of dielectric if they are of the same physical and electrical characteristics.
Coaxial cable consists of an inner (center) conductor separated rom the outer conducted, usually called a shield, by an insulating dielectric
You may split coaxial cable anytime you feel it is necessary to split it.
When is a safety observe required when applying voltage?
When voltage is over 50 volts
When voltage is under 50 volts
When voltage is over 300 volts
When voltage is under 300 volts
When installing crimp type contacts, you should fill all unused holes of a connector with unwired contacts and sealing plugs.
