PPL PPL Aviation Weather Services and Meteorology 2

Question 1

What hazardous weather does a SIGMET warn about?

Accepted Answer

Conditions hazardous to all aircraft such as severe turbulence, severe icing, or volcanic ash

Answer

Routine light turbulence along airways

Answer

Minor weather changes requiring alternate route planning

Answer

Minimums below VFR at destination airports

Question 2

How are Winds Aloft forecasts (FB) used in flight planning?

Accepted Answer

To plan fuel burn, flight time, and favorable cruise altitudes based on forecast winds at various levels

Answer

To determine which runway will be in use at the destination

Answer

To identify icing levels along the route

Answer

To determine turbulence severity for passenger comfort

Question 3

What cloud types and conditions characterize a stable atmosphere?

Accepted Answer

Stratiform (layered) clouds, smooth flight conditions, and reduced visibility in haze

Answer

Towering cumulonimbus clouds with severe turbulence

Answer

Rapid vertical development of cumulus clouds

Answer

Clear skies with unlimited visibility and smooth air

Question 4

Why are thunderstorms particularly dangerous to light aircraft?

Accepted Answer

They generate severe turbulence, lightning, large hail, wind shear, and microbursts that can exceed aircraft structural limits

Answer

They create high ceilings that prevent VFR flight

Answer

They cause icing only at high altitudes above the freezing level

Answer

They reduce engine performance due to elevated temperatures

Question 5

What does 'VFR NOT RECOMMENDED' in a weather briefing mean?

Accepted Answer

The briefer advises that conditions are not suitable for VFR flight, though the pilot retains final authority

Answer

VFR flight is legally prohibited in the briefing area

Answer

IMC conditions exist at the destination and alternate airports

Answer

ATC has temporarily restricted VFR flight in the region

Question 6

What is a microburst and why is it hazardous during takeoff and landing?

Accepted Answer

An intense localized downdraft that creates dangerous wind shear with a sudden headwind followed by a severe tailwind

Answer

A light, refreshing downdraft common in mountain areas

Answer

A small area of localized ground fog that reduces RVR

Answer

Clear air turbulence associated with the upper-level jet stream