ACS-AIRMAN CERTIFICATION STANDARDS PART 4
QUESTIONS AND ANSWERS 100% CORRECT
How do you activate the airport lights at night? On the right frequency...
click on the mic 3 times for low
click on the mic 5 times for medium
click on the mic 7 times for high
Define the term ceiling lowest layer of clouds BKN (broken) or OVC (overcast)
What are the three stages of a thunderstorm? 1. Cumulus - Big updrafts, characterized by the
building phase.
2. Mature - Start of precipitation. the moment rain starts to fall.
3. Dissipating - Characterized by downdrafts, rains double in size. It begins to rain itself out
High pressure systems BIG blue H refers to high pressure systems; anticyclone. Typically lots of
sunshine and good weather. Dry weather and mostly clear skies. DESCENDING AIR
Low pressure systems BIG red L refers to low pressure systems. Low-pressure systems are
associated with clouds and precipitation that minimize temperature changes throughout the day. Bad
weather is typically associated with low pressure systems. Cyclonic circulation
What determines how stable the atmosphere is? The stability of the atmosphere depends on its
ability to RESIST vertical motion. A stable atmosphere makes vertical movement difficult, and small
vertical disturbances dampen out and disappear.
Spatial Disorientation is defined as the inability of a pilot to correctly interpret aircraft attitude,
altitude or airspeed in relation to the Earth or other points of referenc
Compass Errors Variation: difference between true and magnetic N
Deviation: Magnetic field generated from aircraft
Magnetic dip: gets closer to North Pole
Oscillation: due to turbulence or rough control
QUESTIONS AND ANSWERS 100% CORRECT
How do you activate the airport lights at night? On the right frequency...
click on the mic 3 times for low
click on the mic 5 times for medium
click on the mic 7 times for high
Define the term ceiling lowest layer of clouds BKN (broken) or OVC (overcast)
What are the three stages of a thunderstorm? 1. Cumulus - Big updrafts, characterized by the
building phase.
2. Mature - Start of precipitation. the moment rain starts to fall.
3. Dissipating - Characterized by downdrafts, rains double in size. It begins to rain itself out
High pressure systems BIG blue H refers to high pressure systems; anticyclone. Typically lots of
sunshine and good weather. Dry weather and mostly clear skies. DESCENDING AIR
Low pressure systems BIG red L refers to low pressure systems. Low-pressure systems are
associated with clouds and precipitation that minimize temperature changes throughout the day. Bad
weather is typically associated with low pressure systems. Cyclonic circulation
What determines how stable the atmosphere is? The stability of the atmosphere depends on its
ability to RESIST vertical motion. A stable atmosphere makes vertical movement difficult, and small
vertical disturbances dampen out and disappear.
Spatial Disorientation is defined as the inability of a pilot to correctly interpret aircraft attitude,
altitude or airspeed in relation to the Earth or other points of referenc
Compass Errors Variation: difference between true and magnetic N
Deviation: Magnetic field generated from aircraft
Magnetic dip: gets closer to North Pole
Oscillation: due to turbulence or rough control
