Avionics Maintenance (2018) Flashcards
What are the two broad categories of maintenance?
Preventive
corrective maintenance.
Describe preventive maintenance.
maintenance performed to reduce the likelihood of future troubles or malfunctions.
What is the first step you should take when receiving a discrepancy?
Determine if the equipment in question is actually faulty.
Describe the use of continuity tests.
To check for opens or to see if a circuit is complete or continuous.
Describe the major method for testing shorts in transformers, motor windings, and capacitors.
to take resistance measurements and compare them with schematics, MIMs, or identical operational equipment.
What is the proper color code for a 100-ohm resistor with a 10-percent tolerance?
1st Digit: Brown; 2nd digit: Black; Multiplier: Brown; Tolerance: Silver;
What must you consider when substituting a resistor to ensure it is a proper sub- stitution?
You must consider ohmic value, wattage rating, tolerance, physical dimensions, and type of construction.
Who can make microelectronic repairs?
Only certified microminiature component repair (MMCR) personnel.
Describe the causes of component damage during maintenance.
usually results from excess heat during repair, reversed polarity of ohmmeters while checking for continuity, excessive voltage application or signal strength during testing, rough handling, or using the wrong tools or materials.
What manual should you refer to for further information on procedures for desoldering components?
NAVAIR 01-1A-23.
To what NAVAIR manual should you refer for detailed instructions on potting or sealing operations?
NAVAIR 01-1A-505.
What are the three major factors to consider when you have to determine the correct conductor you need for a job?
- Conductor size
- insulation
- the environment for the conductor
When may you use a cable splice (other than one made with the crimp-on splice or con- nector) and to what manual should you refer?
- As an emergency measure only.
- NAVAIR 01-1A-505.
Why should you install cable clamps so the screws are above a wire bundle?
The weight of the cable may bend and break the clamp.
Describe the difference between a wire group and wire bundle.
A wire group is two or more wires tied or laced together to give identity to an individual system. A wire bundle is two or more wires or groups tied or laced together to provide easier maintenance.
