IFR Weather

If a pilot encounters freezing drizzle, he can assume that

• A. there is warmer air above him.
• B. the freezing drizzle will accumulate as rime ice.
• C. since freezing drizzle is supercooled it is not a concern for structural icing.

The Surface Analysis Chart depicts

• A. actual pressure systems, frontal locations, cloud tops, and precipitation at the time shown on the chart.
• B. frontal locations and expected movement, pressure centers, cloud coverage, and obstructions to vision at the time of chart transmission.
• C. actual frontal positions, pressure patterns, temperature, dewpoint, wind, weather, and obstructions to vision at the valid time of the chart.

A characteristic of the stratosphere is

• A. an overall decrease of temperature with an increase in altitude.
• B. a relatively even base altitude of approximately 35,000 feet.
• C. relatively small changes in temperature with an increase in altitude.

(Refer to Figure 269, area A.) Just southwest of Circle A what cloud layer is forecast to be over Lake Michigan?

• A. Bases of 5,500 feet MSL and tops at 6,000 feet MSL.
• B. Bases of 550 feet MSL and tops at 600 feet MSL.
• C. Bases of 5,500 feet AGL and tops 6,000 feet AGL.

What wind direction and speed is represented by the entry 9900+00 for 9,000 feet, on a Winds and Temperatures Aloft Forecast (FB)?

• A. Light and variable; less than 5 knots.
• B. Vortex winds exceeding 200 knots.
• C. Light and variable; less than 10 knots.

When approaching a cumulonimbus cell that is on your route of flight, a pilot should

• A. circumnavigate the cell by at least 20 nautical miles.
• B. descend to an altitude that will allow the aircraft to fly under the cell.
• C. attempt to fly under the anvil, as this will protect the aircraft from the most violent parts of the cell.

When a climb or descent through an inversion or wind-shear zone is being performed, the pilot should be alert for which of the following change in airplane performance?

• A. A fast rate of climb and a slow rate of descent.
• B. A sudden change in airspeed.
• C. A sudden surge of thrust.

What feature is associated with a temperature inversion?

• A. A stable layer of air.
• B. An unstable layer of air.
• C. Air mass thunderstorms.

(Refer to Figure 260, area D.) Immediately to the left of the letter D in western New York, what are the surface winds?

• A. Wind 25 gusting to 35 kts.
• B. Wind 20 gusting to 30 kts.
• C. Steady wind at 20 kts.

Which feature is associated with the tropopause?

• A. Absence of wind and turbulent conditions.
• B. Absolute upper limit of cloud formation.
• C. Abrupt change in temperature lapse rate.