ATPL Met Revision 15

38問 • 1年前

問題一覧

The condition which presents the greatest threat of clear air frame ice forming rapidly is ?

Cruise penetration of cumulonimbus with an air temperature of -5

Clear air turbulence can occur in widely different circumstances, but there are some features which generally hold true. It is generally true of jet stream CAT that -

Below it and on the polar side

The extent of coverage of a domestic TAF is -

It is valid for an area of a 5nm from the centre of the airfield

The visibility at an aerodrome is reported as 900RVR. As you vertically pass over the airfield at 3000ft you can clearly see the runway below. You make an ILS approach using the standard 3degree profile. The distance from the threshold you expect to first glimpse the runway is ?

1/2 nm

The information contained in a TTF -

reports current weather conditions at the aerodrome of origin and appends a statement of the trend expected in the next three hours

With reference to the term CAVOK

visibility is 10km or more, with no shallow fog

The statement which correctly describes the information presents in a METAR is -

height of the cloud base is expressed as a three figure group

The tropopause is defined as -

it is the division between an atmospheric layer in which temperature generally falls steadily with increasing altitude, and a layer in which temperature generally remains constant of increases with increasing altitude

The difference between frontal and air mass thunderstorms are ?

strong down draughts close to the ground are more likely beneath frontal storms

The term which most correctly describes an accumulation of airframe icing on an aircraft sufficient enough to make a change in altitude is -

Moderate icing

The statement which best describes conditions on board an airline passenger aircraft encountering moderate turbulence is ?

The aircraft rolls and pitches but remains under control and loose objects move above. The attendants have difficulty walking

The set of conditions which would be most favourable for the formation of thick radiation fog overnight is -

Clear sky, high relative humidity and light wind

The conditions most favourable for the formation of sea fog are -

Air flow from an area of warm water to an area of cold water

The conditions which would be most favourable for the formation of low level jet across southern QLD are

Early morning, clear sky, a high centred to the west of the great dividing range

The statement which gives the best set of atmospheric conditions required for the formation of thunderstorms is -

Unstable atmosphere through to high levels, some form of lifting mechanism and abundant moisture in the lower layers of the atmosphere

You depart an aerodrome with your aircraft altimeter accurately set up to the correct QNH. You observe that the aircraft is experiencing left drift. The effect on the altimeter reading, assuming that the QNH setting is not changed is ?

The aircraft is flying towards an area of lower pressure and the altimeter will over read

During a stable approach to land, you encounter sudden difficulty maintaining the desired glide slope and you need to use unusually large variations of power to hold airspeed within limits. The type of wind shear encountered could be described as ?

Strong

A pilot who encounters wind shear at an uncontrolled aerodrome is obliged to broadcast details of the encounter to 'all aircraft'. The detail which should be included are.

Aerodrome, type and degree of shear, and altitude of greatest effect

The datum used in aerodrome forecasts are -

Cloud base is heigh above the aerodrome wind direction based on true north

The meaning of the term 'dry adiabatic lapse rate' is "?

the rate at which the temperature of unsaturated air changes as a parcel of air ascends or descends through the atmosphere (3 degrees per 1000ft)

A situation in the atmosphere where the environment temperature increases with height is said to be ?

Stable

A strong convergence zone within the equatorial trough would probably lead to ?

Thunderstorms and steady rain

Runway visual range is observed for take off and landing. The point from which this observation is made is ?

The touchdown point for the particular runway

During a stable approach to land, you encounter sudden hazardous effects on aircraft controllability, and you need to use very large variations pf power to hold airspeed. The type of wind shear experienced is ?

Severe

The datum used in METARs are -

cloud base is height above aerodrome, wind direction based on true north

A TTF is an aerodrome weather report (METAR or SPECI) -

to which a trend is appended and is valid for 3 hours from the time of issue

Tropical thunderstorms occurring in the hours just before dawn are most likely to form -

over the sea

The type of thunderstorm generally regarded as having the most severe turbulence is -

shear

A strong pressure gradient is normally associated with -

an area of strong winds

During approach you find difficulty keeping the aircraft on the desired flight path and speed. You observe that there are cumulus clouds in the vicinity and there is virga associated with the clouds. The cause of your difficulties during approach is most likely a ?

Microburst and you would report experiencing strong wind shear

A moist airflow over a mountain range in stable atmospheric conditions is likely to result in ?

a lower cloud base on the windward slope

The most favourable condition for the formation of dust storms near Adelaide are ?

an approaching cold front with a high pressure to the east

You are approaching an airfield near the East coast at 1800UTC. There is no cloud, the wind at 3000ft is 260/30. The ATIS reports wind at 290/12 and QNH 1004 hPa. The most likely explanation for the change in wind velocity below 3000ft is ?

frictional effects are confined to below a surface inversion and the wind at 3000ft is unaffected by surface friction

Visibility, as reported in a METAR in the Australian region, refers to -

minimum visibility over half or more of the horizon

An approaching idealised (Fast moving) cold front may generally be recognised by the accompanying

broken cumuliform cloud and rain showers

The term which best describes an accumulation of airframe icing on aircraft which may be sufficient to make a change in altitude essential is ?

Severe

The most likely occurrence of radiation fog is ?

an anticyclone with no cloud cover

The area of maximum wind shear associated with a jet stream will normally be found ?

to the side of the jet nearest to the pole

ATPL Systems

Will Erwin · 50問 · 2年前

ATPL Systems