Exam Questions and CORRECT Answers
What color lights are used for a landing pad - CORRECT ANSWER - combination of
green, yellow, white
lift differential that exists between the advancing main rotor blade and the retreating rotor blade
is known as? - CORRECT ANSWER - Dis-symmetry of lift
to maintain the desired hovering altitude (no wind conditions ) you must? - CORRECT
ANSWER - change the amount of main rotor thrust
Density altitude at sea level is - CORRECT ANSWER - 29.92 inHg (inches of mercury) at
15 degrees C
What is created by the motion of an airfoil through the air - CORRECT ANSWER -
relative wind
when departing behind a heavy aircraft the pilot should avoid wake turbulence by maneuvering
the helicopter - CORRECT ANSWER - Above and upwind from the heavy aircraft
What actions should you take if engine failure occurs at altitude? - CORRECT ANSWER -
lower the collective pitch control to maintain rotor RPM
during a hover, a helicopter tends to drift right. to compensate for this some helicopters? -
CORRECT ANSWER - rotor mast is rigged to the left side
if the rpm is low and manifold pressure is high what initial corrective action should be taken? -
CORRECT ANSWER - lower the collective pitch
,high air speeds especially in turbulent air should be avoided because the possibility of ? -
CORRECT ANSWER - the retreating blade to stall in forward flight, stalls are more likely
to occur under conditions of high gross weight, low rpm, high density altitude, steep or abrupt
turns, and or turbulent flight.
translation lift is the result of? - CORRECT ANSWER - Airspeed
during surface taxi the collective pitch is used to control? - CORRECT ANSWER - the
rate of speed. the higher the collective pitch the higher the taxi speed.
the upward bending of the rotor blades resulting from the combination of lift and centrifugal
forces is known as - CORRECT ANSWER - coning
the tail rotor produces thrust and is variable through the use of ? - CORRECT ANSWER -
anti torque pedals
medium frequency vibrations would be associated with - CORRECT ANSWER - defects
in tail rotor
while in cruise level flight, low frequency vibrations (100-400 cycles per minute) are usually
associated with? - CORRECT ANSWER - always associated with the main rotor
a stall is the results of ? - CORRECT ANSWER - exceeding the angle of attack
What is ground effect ? - CORRECT ANSWER - the result of interference of the surface
the primary purpose of the tail rotor system is to ? - CORRECT ANSWER - counteract the
torque effect of the main rotor
the most effective method of scanning for other aircraft for collision avoidance during daylight
hours is to use ? - CORRECT ANSWER - a series of short regularly spaced eye
, movements that bring successive areas of the sky into the central visual field each movement
should not exceed 10 degrees and each area should be observed for at least one second to enable
detection
translation lift is the result of ? - CORRECT ANSWER - increased rotor efficiency
in a no wind condition, which control is used to change heading? - CORRECT ANSWER -
cyclic control
a helicopter that is improperly loaded with a CG forward of forward limits will ? - CORRECT
ANSWER - *have a nose low altitude * need excessive rearward displacement of the
cyclic to maintain hover
the wind conditions that requires the most caution when avoiding wake turbulence on landing is -
CORRECT ANSWER - light tail winds because they can move the vortices of a preceding
aircraft forward into the anticipated touch down zone of another
when operating at high forward air speeds, retreating blade stall are more likely to occur under
which conditions? - CORRECT ANSWER - high gross weight, low rpm, high density
altitude, steep or adrupt turns, and or turbulent flight
to initiate a quick stop ? - CORRECT ANSWER - aft the cyclic and simultaneously lower
the collective pitch
if possible when departing from a defined area what type of take off is preferred? - CORRECT
ANSWER - a normal take off from a hover should be made in confined areas
under what conditions should a pilot consider using a running take off? - CORRECT
ANSWER - when gross weight or density altitude prevents a sustained hover at normal
hovering altitude. this is often referred to as high density altitude takeoff