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General Prep
Faa General flash cards
Question | Answer |
---|---|
How does the center of gravity (CG) range of helicopters compare to airplanes? | Typically more restrictive |
What is a line called which shows an edge that is not visible? | A hidden line |
What type of nondestructive testing is used for aluminum castings? | Dye Penetrate, Eddy current, Ultrasonic, visual |
How is an aluminum alloy part heat treated? | Heated in an oven, Then immediately quenched in water |
How much slack is allowed in flexible lines at installation? | 5-8% of its length |
What is the correct way to connect a voltmeter in a circuit? | In parallel with the unit |
What test type best determines the quality of a composite repair? | Metallic ring test |
What is the grip length of a bolt? | The length of the un-threaded shank |
What documents list an aircraft's maximum weight? | Aircraft's specification and type certificate data sheet |
Circular magnetization can detect what defects? | Defects that are parallel to the long axis of a part |
How much voltage may be connected across a 20 watt 2000 ohm resistor? | 200 Volts |
At what temperature does a hydrometer reading not require correction? | 80 degrees fahrenheit |
What process hardens metal by introducing nitride? | Case hardening |
If a torqued castle nut does not align with the hole you should? | Change washers and try again |
Why will Ni-Cad batteries in long storage show a low liquid level? | Electrolyte becomes absorbed into the plates |
What are two results of annealing? | Softens metal and Decreases internal strength |
Why is a nut and sleeve preferable to a single piece flare fitting? | Wont reduce thickness of the flare when tightening |
How is output voltage of a separately excited ac generator controlled? | By varying the field current |
In what heat treat state does steel have its lowest strength? | Its annealed state |
Values in a torque chart apply to what condition of the threads? | Clean and dry threads |
What material is typically used for aircraft engine firewalls? | Stainless Steel |
Drawings in which sub assemblies are shown together is called? | An installation diagram |
In aluminum alloy 5052-H36. what does ( H-36 ) mean? | Its a non heat treated, but strain hardened to 3/4th its hard state |
In the aluminum alloy 3003-F what does (F) mean? | The metal is fabricated with no temper control. |
What is clad aluminum alloy? | High strength sheets covered with a layer of pure aluminum |
What type of metals are normalized? | Iron based metals |
How does metal become strain or work hardened? | Repeatedly applying force by bending or hammering |
Why is there space beneath the plates in a lead acid battery container? | Prevent sediment from touching the plates causing a short circuit |
Why is steel tempered after being hardened? | Relieve internal stress and reduce brittleness |
What is the minimum hose length used between fittings 50" apart? | 52.5 " which is 105-108% the distance |
In aluminum alloy 6061-0 what does the ( O ) mean ? | The metal has been annealed |
How do the determine the empty weight if the weight and balance records are lost? | Re-weigh the aircraft |
In dye penetrate inspection what does the developer do? | Pulls the penetrate from a crack thus exposing the fault |
What type of load may a Clevis Bolt be used? | Only for shear loads and never for tension |
What is the purpose of normalizing metals? | Reduce stresses put into the metal during its fabrication |
Typically bolt heads are installed in what direction? | Upwards with the head forward |
With which forms are records of major air-frame repairs reported? |