Longitudinal (fore and aft) stuctural members of a semi monocoque fuselage are called: spars and ribs longerons and stringers spars and stringers.
Which statemtent is true regarding a cantilever wing? no external bracing is needed it requires only one lift strut on each side it has nonadjustable lift struts.
The monocoque fuselage relies largely on the strength of: bulkheads and longerons longerons and formers skin or covering.
Which part(s) of a semi monocoque fuselage prevent(s) tension and compression from bending the fuselage? bulkheads and skin longerons and stringers the fuselage covering.
The aluminum alloys used in aircraft constructions are usually hardened by which method? heat treatment aging cold working.
When repairing a small hole on a metal stressed skin, the major consideration in the design of the patch should be: that the bond between the patch and the skin is sufficient to prevent dissimilar metal corrosion the shear strength of the riveted joint to use rivet spacing similar to a seam in the skin.
Clad aluminum alloys are used in aircraft because they: are stronger than unclad aluminum alloys are less subject to corrosion than uncoated aluminum alloys can be heat treated much easier than the other forms of aluminum.
Laminated wood spars may be substituted for solid rectangular wood spars: only in certain instances where they primary load is shared by one or more other original structural member only upon specific approval by the manufacturer or the FAA if the same quality wood is used in both.
The strength of a well designed and properly prepared wood splice joint is provided by the: bearing surface of the wood fibers glue reinforcement plates.
Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair? technical standard orders aircraft specifications or type certificate data sheets AC 43.13-1B.
In gas tungsten arc (GTA) welding, a stream of inert gas is used to: concentrate the heat of the arc and prevent its dissipation prevent the formation of oxides in the puddle lower the temperature required to properly fuse the metal.
Why is it necessary to use flux in all silver soldering operations? to chemically clean the base metal of oxide film to prevent overheating of the base metal to increase heat conductivity.
The determining factor(s) for the selection of the correct weight of textile fabric to be used in covering any type of aircraft is the: speed of the aircraft maximum wing loading speed of the aircraft and the maximum wing loading.
Finishing tape (surface tape) is used for what purpose? to provide additional anti-tear resistence under reinforcement tape to help prevent "ripple formation" in covering fabric to provide additional wear resistance over the edges of fabric forming structures.
The strength classification of fabrics used in aircraft covering is based on: bearing strength tensile strength shear strength.
Fabric rejuvenator is used to: restore fabric strength and tautness to at least the minimum acceptable level restore the condition of dope coatings penetrate the fabric and restore fungicidal resistance.
Fungicidal dopes are used in aircraft finishing as the: final, full-bodied, brushed-on coat to reduce blushing first coat to prevent fabric rotting and are applied thin enough to saturate the fabric first, full-bodied, brushed-on coat to prevent fungus damage.
What is the usual cause of runs ans sags in aircraft finishes? low atmospheric humidity too much material applied in one coat material is being applied too fast.
Which defect in aircraft finishes may be caused by adverse humidity, drafts, or sudden changes in temperature? orange peel pinholes blushing.
The preferred location of a VOR antenna on light aircraft is on:
the bottom of the fuselage and as far forward as possible. top of the cabin with the apex of the V pointing forward. top of the vertical stabilizer.
When flags such as NAV, HDG, or GS are displayed on an HSI, the indication is:
that function is inoperative. that function is operating. to call attention to deviation from the desired setting, or flight path, or heading, etc.
Rigging and alignment checks should not be undertaken in the open; however, if this cannot be avoided, the aircraft should be positioned:
obliquely into the wind. facing any direction since it makes no difference if the wind is steady (not gusting). with the nose into the wind.
To help minimize radio interference a capacitor will largely eliminate and provide a steady direct current if the capacitor is connected to the generator in:
parallel. series. series/parallel.
Some hydraulic systems incorporate a device which is designed to remain open to allow a normal fluid flow in the line, but closed if the fluid flow increases above an established rate. This device is generally referred to as a:
hydraulic fuse. flow regulator. metering check valve.
A special bolt in a landing gear attachment requires a torque value of 440 inch-pounds. How many foot-pounds are required?
36.8. 38. 36.6.
When handling a high voltage capacitor in an electrical circuit, be sure it:
has a full charge before removing it from the circuit. has at least a residual charge before removing it from the circuit. is fully discharged before removing it from the circuit.
Which channel of an autopilot detects changes in pitch attitude of an aircraft?
Elevator. Aileron. Rudder.
Heat exchanger cooling units are required in some aircraft hydraulic systems because of: the high heat generated from braking high pressures and high rates of fluid flow fluid flammability.
When performing the static system leakage check required by section 91.411, the technician utilizes: negative pressure positive pressure static pressure.
Hydraulic system thermal relief valves are set to open at a: lower pressure than the system relief valve higher pressure than the system relief valve lower pressure than the system pressure regulator.
If control cables are adjusted properly and the control surfaces tend to vibrate, the probable cause is: oil can effects on the control surfaces worn attachment fittings excessive cable tension.
Which statement is true with respect to an aircraft equipped with hydraulically operated multiple disk type brake assemblies? there are no minimum or maximum disk clearance checks required due to the use of self compensating cylinder assemblies no parking brake provisions are possible for this type of brake assembly do not set parking brake when brakes are hot.
The primary purpose for balancing aircraft wheel assemblies is to: prevent heavy spots and reduce vibration distribute the aircraft weight properly reduce excessive wear and turbulence.
The purpose of a joggle is to: increase obstruction for a sheet or an extrusion decrease the weight of the part and still retain the necessary strength allow clearance for a sheet or an extrusion.
On modern large aircraft, what electronic device typically monitors flight parameters and performs autopilot functions? control/display unit transponder flight management computer.
What physical factors are involved in the aspect ratio of airplane wings? thickness and chord dihedral and angle of attack span and chord.
Data transmitted between components in an EFIS are converted into:*** analog signals carrier wave signals digital signals.
The requirements for testing and inspection of instrument static systems required by section 91.411 are contained in: AC 43.13-1A part 43, appendix E type certificate data sheets.
The primary considerations when selecting electric cable size are: the voltage and amperage of the load it must carry current carrying capacity and allowable voltage drop the system voltage and cable length.
The poles of a generator are laminated to: reduce flux losses increase flux concentration reduce eddy current losses.
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