Aircraft Drawing/Weight and Balance/Ground Ops/Corrosion Control
Weight and Balance: List items found in the TCDS that is of concern to aircrafts' W&B.
CG ranges, Max weight, leveling means, Number of seats, Baggage Capacity, Fuel, Datum, Engine HP, Oil Capacity, Amount of fuel, Amount of oil.
Math: What is a ratio?
The comparison of two numbers or quantities.
Electricity: When the external magnetizing force is removed, the difference between permanent/temporary magnets is...
Permanent magnets retain their magnetism. Temporary magnets rapidly lose magnetism.
What is the ATA 100 system?
Air Transport Association that standardize technical data regardless of manufacturer.
In what direction is pressure transmitted when force is applied to a confined fluid?
Equally in all directions.
Aircraft Drawing: How may you bring out important details of apart in aircraft drawing?
A detail view draw to a larger scale.
Fluid Lines: What is the maximum interval for repeating the required markings (hose identification) on a flexible hose?
No more than 9" along the length of the hose.
Privileges and Limitations: What title and part of Federal Regulations prescribes the certification requirements for a mechanic?
FAR part 65.
What is the definition of the term "airworthy"?
What is the atmospheric pressure on a standard day at sea level?
14.7 PSI or 29.92 inches of Mercury or 1013.2 millibars
Corrosion Control: Name at least one of the principal causes of filiform corrosion.
Improper or incomplete curing of wash primer prior to painting or failure to keep acidic surface contaminants washed off.
Materials and Processes: What class of thread are aircraft bolts commonly manufactured?
Class 3, medium fit.
Electricity: Common methods electrical energy can be produced:
Pressure (Pizoelectric materials), Chemical (Battery), Thermal (Thermocouples), Sun Light.
What determines if an aircraft is considered a large aircraft?
When the takeoff weight is OVER 12,500 pounds.
What factors determine density altitude?
Pressure and Atomospheric Temperature.
Ground Ops: What type of fire can a CO2 extinguisher be used on?
Class A, B, and C type fires.
Fluid Lines: What is the difference between flare angles for aviation and automotive flares?
45 degree flares are used on cars, 35-37 degree flares in aviation.
Electricity: Using a multimeter, how would a technician read current?
Inserting the ammeter or multimeter in series by opening or breaking the circuit. The positive side of the meter (RED) is connected towards the positive voltage source. Negative jack (BLACK).
How long must temporary records be kept by aircraft owner?
1 year or until the work is repeated or superseded.
What causes an airplane wing to stall?
A stall is caused by the separation of the airflow across the top of the wing from the wing upper surface when the angle of attack exceeds a critical value.
Weight and Balance: Before a helicopter is weighted, it must be leveled in what directions?
Longitudinally and Laterally
Maintenance Publications: What are the three types of ADs issued?
Notice, Final Rule, and Emergency ADs
Electricity: What is considered to be the open-circuit voltage of a fully charged 12 cell lead-acid battery?
Approximately 26.4 volts. Or (12x2.2 volts) 28 volts are required for charging.
Who may make a maintenance record entry for approval for return to service after a progressive inspection is performed, when the aircraft is away from home base?
Applicable certified mechanic, a repair station, the aircraft manufacturer.
What function do wing Mounted Vortex Generators have?
Vortex generators serve to delay or keep the air flow from separating from the upper surface of the wings durig high-speed flights.