If a flight crew sees volcanic activity, what do they need to advise in their report?

• A basic description of the volcanic activity

• The location of the Volcanic activity, and any associated weather conditions

• Location and vertical extent of the ash cloud

• Callsign, position, time, altitude or flight level, location of activity observed, air temperature, spot wind and a brief description of vertical extent of ash cloud

State the latitudes where diurnal variation of pressure is the greatest?

• Polar regions

• Equatorial regions

• Mid latitudes

• The same throughout the world

As an aircraft, cruising at the freezing level, crosses out of a cold front – what air will the aircraft be entering, and where will the aircraft now be relative to the freezing level?

• Warmer air, above the FZL

• Warmer air, below the FZL

• Colder air, above the FZL

• Colder air, below the FZL

What does VCSH mean?

• Showers in the vicinity

• Volcanic ash

• Volcanic showers

In regards to a STOL (short takeoff and landing) aircraft, why is ice accretion less on the wings than on other surfaces such as propellers and ariels?

• Friction provides heating to bring the aircraft’s wing temperature above 0°C

• The stagnation point in front of the leading edge of the wing creates an area of high pressure which reduce ice accretion

• Aircraft cruise at lower speeds and altitudes

• There is a greater surface area for ice to accumulate onto

Under independent Cumulus clouds, what stability will the air have?

• Stable

• Unstable

• Conditionally stable

• Inversion

How will Volcanic Ash affect aircraft?

• Flameout due to engine overheating

• Affects piston and turbine engines the same

• Doesn’t affect turbines

• Ash causes blockage of airflow in a turbine engine causing flameout

When is the SPCZ most active?

• Summer

• Winter

• When the ITCZ is active

• When the ITCZ is inactive

How is RVR measured on the runway?

• By the pilot reporting the amount of runway lights visible

• At three sensors along the runway (Touchdown zone, mid point, stop end)

• By an AWS placed at the aerodrome

Chose the correct statement below in regards of the two lines (isobars)

• If wind is westerly, A and B are Troughs and C and D are ridges

• If wind is southerly, ABCD will be a COL

• If wind is easterly, A and B are Troughs and C and D are ridges

• If Wind is northerly, ABCD will be a COL