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SkyWest interview Questions with Solutions
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Exam of 17 pages for the course skywest Airlines at skywest Airlines (SkyWest interview)
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SkyWest interviewDescribe Mach Tuck - answer-Result of an aft ward shift in the center of lift causing a
nose down pitching moment due to two reasons.
1) Shockwave induced flow separation, which normally begins near the wing root,
causes a decrease in the downwash velocity over the elevator and produces a tendency
for the aircraft to nose down
2) Aft ward movement of the center of lift, which tends to unbalance the equilibrium of
the plane in relation to its CG in subsonic flight
Dutch Roll - answer-A combination of rolling and yawing oscillations that normally
occurs when the dihedral effects of an aircraft are more powerful than the directional
stability. Usually dynamically stable but objectionable in an airplane because of the
oscillatory nature.
Pros of a swept wing - answer-Higher cruising speeds due to a higher critical Mach
number.
-Swept wing acts as if its flying at a lower speed than it actually is.
-Drag is reduced at high speeds
Cons of a swept wing - answer-Reduced lift requiring the need for high lift flaps and
leading edge devices (Slats)
-At low airspeed the wingtips tend to stall first, resulting in a loss of aileron effectiveness
-Most swept wing jets have poor yaw tendencies and will develop an advanced Dutch
roll if not handled with perfect coordination.
Diode - answer-Two element electrical device that allows current to travel in one
direction only.
-Sometimes thought of as an electronic check valve
Solenoid - answer- An electromagnetically operated switch with a moveable core. Used
to operate a variety of devices including switches, valves, and electromechanical
devices
Gearbox accesory - answer-Part of Turbofan engine, not apart of the core
-Driven by the N2 shaft (connecting the high-pressure turbine to the high pressure
compressor)
-Turns accessories such as generators, hydraulic pumps, oil pumps
Critical Mach - answer-Lowest Mach number at which the airflow over any part of the
aircraft reaches the speed of sound
,-flight speeds greater than critical Mach will cause a dramatic increase in total drag and
changes to the airflow over control surfaces leading to deteriorating control of aircraft
Where is bleed air drawn from - answer-Auxiliary power unit (APU) or another operating
engine
-Compressor section of engine
Uses for bleed air - answer-Pressurization of cabin
-Air conditioning
-engine start
-Wing and engine anti-ice systems
-water system pressurization
-Hydraulic system reservoir pressurization
-boundary layer separation enhancement
AC and DC power in aircraft - answer-Primary power generation is normally AC with
one or more Transformer Rectifier Units(TRU) providing conversion to DC voltage to
power the DC buses
AC power - answer-alternating current
-AC can be transmitted over long distances more readily and more economically than
DC since AC voltages can be increased or decreased by means of transformers.
DC Power - answer-direct current
SkyWest CEO - answer-Chip Childs
How long does a TAF tempo line last - answer-Expected to last for generally less than
an hour at a time
-Are expected to occur during less than half the time period
How long is a TAF valid for - answer24 or 30 hours depending on the TAF
Airspeed inside of and below a class B airspace - answer-Below, 200 kts
-Inside, 250 below 10,000 feet
Max airspeed inside class B above 10,000 feet - answer-Unrestricted
Max airspeed inside a VFR corridor - answer-200 kts
Do you have to accept a LAHSO - answer-NO
Are you allowed to go around after accepting a LAHSO - answer-A LAHSO clearance
does not preclude a rejected landing
-YES
, What is a critical engine - answerThe engine that when failed, it will most adversely
affect the performance and handling capabilities of a multi-engine aircraft.
What makes it the critical engine - answer-PAST
- P-Factor
-Accelerated slip stream
-Spiraling slip stream
-Torque
V1 - answer-Speed by which time the decision to continue flight if an engine fails has
been made.
-Commit to fly speed
V2 - answer-Speed at which the airplane will climb in the event of an engine failure
-Takeoff safety speed
Vrot - answer-Rotation speed is defined as the speed at which the aircraft attitude is
increased
Vmc - answer-Minimum controllable airspeed with one engine operative
Vlof - answer-Lift off speed is the speed at which lift off actually occurs
What happens to air temperature as it goes through the compressor - answer-
Temperatures increase from being compressed
Where does bleed air come from and why different stages - answer-Comes from the
compressors
-Taken from different stages because the aircraft might require some air to be of
different temperatures and pressures
What is a compressor stall - answer-angle of attack of the blades of the compressor
exceed their critical angle of attack resulting in one or more stages of rotor blades failing
to pass air smoothly to the succeeding stages
What is coffin corner or Q corner - answer-The edge of an aircrafts high altitude
operating envelope, marked by the speed margin between the high speed buffet and
low speed buffet.
-At very high altitudes this difference may be just a few knots and might disappear
altogether for certain aircraft.
-A small increase in bank angle or turbulence could induce a stall that may be
unrecoverable.
-Descend to a lower flight level.
If you see the ALS can you land - answerYes if you can see the red terminating bars or
side row bars
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