Index - Atpl Campus

100 item has been found

1-If you have to fly through a warm front when freezing level is at 10000 feet in the warm air and at 2000 feet in the cold air, at which altitude is the probability of freezing rain the lowest ?

050 2177 Air Masses and Fronts

3000 feet 12000 feet 5000 feet 9000 feet

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2-On the approach, the surface temperature is given as -5°C. The freezing level is at 3000 FT/AGL. At 4000 FT/AGL, there is a solid cloud layer from which rain is falling. According to the weather briefing, the clouds are due to an inversion caused by warm air sliding up and over an inclined front. Would you expect icing?

050 2049 Flight Hazards

Yes, but only between 3000 and 4000 FT/AGL. No, absolutely no icing will occur. Yes, between ground level and 3000 FT/AGL. No, flights clear of cloud experience no icing.

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3-You are planning to fly across a mountain range. The chart recommends a minimum altitude of 12000 feet above mean sea level. The air mass you will be flying through is an average 10°C warmer than ISA. Your altimeter is set to 1023 hPa (QNH of a nearby airport at nearly sea level). What altitude will the altimeter show when you have reached the recommended minimum altitude?

050 2522 The Atmosphere

12210 feet 11520 feet 11790 feet 11250 feet

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4-At which front system is freezing rain oberved?

050 1

Warm front Stationary front Occluded front Cold front

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5-Which of the following conditions are you most likely to encounter when approaching an active warm front at medium to low level ?

050 1264 Air Masses and Fronts

Severe thunderstorms at low altitude. Low cloud base and poor visibility. High cloud base, good surface visibility, and isolated thunderstorms. Extreme turbulence and severe lightning striking the ground.

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6-Cold front undercuts the warm air because of;

050 1

Steep front angle. High density. High wind speed. Warm air.

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7-How does a pilot react to heavy freezing rain at 2000 FT/AGL, when he is unable to deice, nor land?

050 1559 Flight Hazards

He ascends to the cold air layer above. He descends to the warm air layer below. He continues to fly at the same altitude. He turns back before the aircraft loses manoeuvrability.

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8-An occlusion is called a warm occlusion when the cold air

050 13665 Air Masses and Fronts

at the rear of the occlusion is less cold than the cold air ahead, with the warm air at a higher altitude. ahead of the surface position of the occlusion is only at a higher altitude. at the rear of the occlusion is colder than the cold air ahead, with the warm air at a higher altitude. at the rear of the occlusion is colder than the cold air ahead.

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9-You are at FL120 with an outside air temperature is -2°C. Where would you find the freezing level?

050 1

FL100 FL110 FL090 FL140

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10-Which of the following cloud types will most probably form when cold moist air moves over a warm surface?

050 16710 Air Masses and Fronts

Nimbostratus. Stratus. Stratocumulus. Cumulus.

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11-If you are flying at FL 120 and the outside temperature is -2°C, at what altitude will the "freezing level" be?

050 2253 The Atmosphere

FL 110 FL 90 FL 150 FL 130

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12-In which of the following situations can freezing rain be encountered ?

050 1596 Air Masses and Fronts

Ahead of a cold front in the summer Behind a warm front in the summer Ahead of a cold front in the winter Ahead of a warm front in the winter

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13-Which of the following are favourable conditions for the formation of freezing rain?

050 1212 Precipitation

Water droplets falling from cold air aloft with a temperature below 0°C into air with a temperature above 0°C. An isothermal layer aloft with a temperature just above 0°C through which rain is falling. Warm air aloft from which rain is falling into air with a temperature below 0°C. Cold air aloft from which hail is falling into air that is warm.

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14-After passing at right angles through a very active cold front in the direction towards the cold air, what will you encounter at FL 50, in the northern hemisphere immediately after a marked change in temperature?

050 1278 Air Masses and Fronts

An increase in tailwind. A decrease in tailwind. A veering in the wind direction. A backing in the wind direction.

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15-An aircraft is flying over the sea at FL 100, with a true altitude of 10000 feet; local QNH is 1003 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

050 2260 The Atmosphere

Its average temperature is about ISA There is insufficient information to come to any conclusion It is colder than ISA It is warmer than ISA

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16-Which statement concerning the cold front and warm front of a frontal depression in the northern hemisphere is correct?

050 13827 Air Masses and Fronts

The wind backs more at the warm front than at the cold front. While occluding the warm front always becomes a front aloft. The risk of fog is greater ahead of and behind the warm front than ahead of and behind the cold front. The precipitation zone of the cold front is in general wider than the precipitation zone of the warm front.

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17-Which of the following combinations is most characteristic of unstable air behind a cold front?

050 15955 Air Masses and Fronts

Poor visibility, intermittent precipitation, cumuliform clouds Good visibility between showers, showery precipitation, cumuliform clouds Poor visibility, continuous precipitation, stratiform clouds Good visibility between showers, persistent precipitation, stratiform clouds

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18-The lowest cloud type observed is Stratus fractus, and there is moderate continuous rain. The area in which you are at this moment is most likely situated

050 10927 Air Masses and Fronts

in a warm sector in a high pressure area in the main body of a warm or cold front well behind a cold front

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19-In wintertime stratus is often formed when warm maritime air moves over cold land. How can such clouds be classified?

050 16550 Clouds and Fog

Convective clouds. Turbulence clouds. Orographic clouds. Frontal clouds.

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20-On an aerodrome, when a warm front is approaching

050 2717 Air Masses and Fronts

QFE and QNH decrease. QFE decreases and QNH increases. QFE and QNH increase. QFE increases and QNH decreases.

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21-An aircraft descends in layered clouds; the freezing level is situated at FL 60.
At what levels is the probability for airframe icing the highest?

050 15726 Flight Hazards

Between FL 60 and FL 20. At FL 140. Between FL 120 and FL 180. Between FL 120 and FL 60.

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22-An aircraft descents in layered clouds; the freezing level is situated at FL 60. At what levels is the probability for airframe icing the highest?

050 13663 Uncategorized Wind

At FL 140. Between FL 120 and FL 180. Between FL 60 and FL 20. Between FL 120 and FL 60.

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23-In case of fronts, what cloud formation is most likely to occur at low levels when a warm air mass overrides a cold air mass?

050 1266 Air Masses and Fronts

Altostratus. Cumulonimbus. Cumulus. Nimbostratus.

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24-The slope and speed of a warm front compared to the slope and speed of a cold front is in general:

050 13609 Air Masses and Fronts

smaller and slower. greater and slower. smaller and faster. greater and faster.

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25-How does freezing rain develop?

050 1593 Precipitation

Through melting of ice crystals Through melting of snow grains Snow falls through a layer where temperatures are above 0°C Rain falls through a layer where temperatures are below 0°C

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26-You intend to overfly a mountain range. The recommended minimum flight altitude is, according to the aviation chart, 15000 FT/AMSL. The air mass that you will fly through is on average 15°C warmer than the standard atmosphere. The altimeter is set to QNH (1023 hPa). At what altimeter reading will you effectively be at the recommended minimum flight altitude?

050 1556 The Atmosphere

15900 FT. 13830 FT. 14100 FT. 14370 FT.

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27-Continuous freezing rain is observed at an airfield. Which of the four diagrams is most likely to reflect temperatures above the airfield concerned?

050 2562 Flight Hazards

Diagram 1 Diagram 2 Diagram 3 Diagram 4

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28-How do air masses move at a warm front ?

050 1597 Air Masses and Fronts

Warm air overrides a cold air mass Warm air undercuts a cold air mass Cold air overrides a warm air mass Cold air undercuts a warm air mass

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29-The air mass in the warm sector of a polar front is:

050 12836 Uncategorized Wind

equatorial air. polar air. tropical air. arctic air.

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30-The following temperatures have been observed over a station at 1200 UTC. Assume the station is at MSL. Height in feet. Temperature in degrees C. 20000.-12 18000.-11 16000.-10 14000.-10 12000.-6 10000.-2 8000. +2 6000. +6 4000. +12 2000. +15 surface+15. Which of the following statements is correct ?

050 4134 Uncategorized Wind

The temperature at 10000 FT is in agreement with the temperature in the International Standard Atmosphere. The layer between 16000 and 18000 FT is absolutely unstable Assuming that the MSL pressure is 1013.25 hPa the true altitude of an aircraft would actually be higher than the indicated altitude. The height of the freezing level over the station is approximately 12000 FT.

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31-An occlusion has the characteristics of a warm front when:

050 10865 Air Masses and Fronts

the cold air ahead is lifted the cold air behind is colder than the cold air ahead the cold air behind is lifted by the warm air the cold air behind is warmer than the cold air ahead

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32-You are flying at a constant indicated altitude with the QNH of 1015 set within the subscale and you notice the outside air temperature has been falling constantly. What can you expect to have happened to your true altitude?

050 1

The true altitude will have decreased. The true altitude will have remained the same. The true altitude will have increased. The true altitude will have increased then decreased.

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33-Where is the cold air in an occlusion that has the characteristics of a cold front?

050 1

After the occlusion Behind the front Ahead of the front At the front

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34-An aircraft is approaching a cold front from the warm air mass side at FL 270 and experiencing moderate to severe turbulence. A jet stream is forecast to be at FL 310. The shortest way to get out of this turbulence is by:

050 2171 Flight Hazards

Climbing Descending Maintain FL 270 Turn right

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35-How do you recognize a cold air pool?

050 1284 Pressure Systems

As a high pressure area aloft (e.g. on the 500 hPa chart). As a low pressure area aloft (e.g. on the 500 hPa chart). A cold air pool may only be recognized on the surface chart as a high pressure area. A cold air pool may only be recognized on the surface chart as a low pressure area.

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36-What cloud type can produce freezing rain?

050 16711 Precipitation

Nimbostratus. Stratocumulus. Cumulonimbus. Stratus.

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37-When in the upper part of a layer warm air is advected the

050 4026 The Atmosphere

wind speed will always decrease with increasing height in the northern hemisphere stability increases in the layer wind will back with increasing height in the northern hemisphere stability decreases in the layer

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38-When warm air moves over a colder surface, __________.

050 1

it rises. it becomes unstable. it becomes stable. it produces thunderstorms.

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39-Advection of very cold air over a warm sea current can cause:

050 13657 Clouds and Fog

frontal fog. no fog at all. steaming fog. advection fog.

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40-When Air density will be lowest at the Earth's surface:

050 1

pressure is low and temperature is low pressure is high and temperature is low pressure is low and temperature is high pressure is high and temperature is high

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41-When cold air moves over a warmer surface, __________.

050 1

it becomes stable. it produces frontal fog. it becomes unstable. it sinks.

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42-Which airport, at 1200 UTC, has the lowest probability of precipitation?

050 1675 Meteorological Information

ESSA EFHK ENFB LSZH

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43-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?

050 12825 Uncategorized Wind

15100 ft 16920 ft 15620 ft 16360 ft

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44-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?

050 12824 Wind Uncategorized

18290 ft 21770 ft 19310 ft 20630 ft

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45-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?

050 2521 Wind Uncategorized

15100 ft 16360 ft 16920 ft 15620 ft

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46-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?

050 2520 Wind Uncategorized

19310 ft 21770 ft 18290 ft 20630 ft

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47-What type of precipitation would you expect at an active unstable cold front?

050 1598 Wind Uncategorized

Light to moderate continuous rain Showers associated with thunderstorms Drizzle Freezing rain

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48-What is the relative movement of the two air masses along a cold front ?

050 1599 Wind Uncategorized

Cold air slides over a warm air mass Warm air pushes over a cold air mass Warm air pushes under a cold air mass Cold air pushes under a warm air mass

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49-Where is the coldest air to be found, in an occlusion with cold front characteristics?

050 1270 Air Masses and Fronts

Ahead of the front. Behind the front. At the junction of the occlusion. At the surface position of the front.

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50-At a cold front:

050 13668 Air Masses and Fronts

warm air is lifted as cooler air pushes under it. warm air is compressed as cold air rises over it. fog will form from the interaction of cold and warm air. temperature rises owing to increased pressure.

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51-You have been flying for some time in dense layered cloud. The outside air temperature is -25°C. Which of the following statements is true?

050 2712 Flight Hazards

In a dense layered cloud icing is unlikely also at an outside air temperature of -5°C If you do not have weather radar on board there is no need to worry, as CB is unlikely to form in such cloud Severe airframe icing is unlikely under these conditions Severe airframe icing is quite likely under these conditions

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52-What type of fronts are most likely to be present during the winter in Central Europe when temperatures close to the ground are below 0°C, and freezing rain starts to fall?

050 1263 Air Masses and Fronts

Cold fronts. High level cold fronts. Cold occlusions. Warm fronts, warm occlusions.

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53-At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?

050 13635 The Atmosphere

In a very cold area with a QNH of 1015 hPa At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa In a cold low pressure region At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa

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54-At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?

050 1579 The Atmosphere

At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa In a very cold area with a QNH of 1015 hPa At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa In a cold low pressure region

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55-Which type of precipitation is the most dangerous at the time of warm front?

050 1

Drizzle Freezing rain Snow Hail

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56-Where is the projection of the polar front jet stream on the surface most likely to be found in relation to the cold and warm fronts of a depression?

050 12801

50 to 200 NM behind the cold front and 300 to 450 NM ahead of the warm front 300 to 450 NM behind the cold front and 50 to 200 NM ahead of the warm front Up to 100 NM either side of the cold front and up to 200 NM either side of the warm front Up to 200 NM either side of the cold front and up to 200 NM either side of the warm front

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57-The occurrence of freezing rain at FL 60 is most likely in square

050 13586 Air Masses and Fronts

2A 3C 2D 3B

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58-When warm moist air moves over a colder surface, __________.

050 1

it becomes unstable. it rises. it may produce fog and visibility may reduce. it may produce convective clouds and turbulence.

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59-Which of the following is typical for the passage of an active cold front in the summer ?

050 449 Air Masses and Fronts

Rapid increase in temperature once the front has passed Mainly layered clouds Rapid drop in pressure once the front has passed Mainly towering clouds

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60-An aircraft is flying through the Alps on a very cold winter's day. The regional QNH is 1013 hPa. During the flight, you circle around a mountain at an altitude of its summit. What reading will the aneroid altimeter give, compared to the elevation of the summit?

050 14145 The Atmosphere

There is insufficient information to come to a conclusion The same altitude as the elevation of the summit A lower altitude than the elevation of the summit A higher altitude than the elevation of the summit

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61-When cold moist air moves over a warmer surface, __________.

050 1

it may produce convective clouds and turbulence. it may produce stratified clouds it sinks. it may produce frontal fog.

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62-An aircraft is flying over the sea at FL 120, with a true altitude of 12000 feet; local QNH is 1013 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

050 2259 The Atmosphere

It is colder than ISA There is insufficient information to come to any conclusion Its average temperature is the same as ISA It is warmer than ISA

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63-An aircraft is flying over the sea at FL 90; the true altitude is 9100 feet; local QNH is unknown. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

050 2258 The Atmosphere

There is insufficient information to make any assumption Its average temperature is the same as ISA It is warmer than ISA It is colder than ISA

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64-During a flight over the sea at FL 135, the true altitude is 13500 feet; local QNH is 1019 hPa. What information, if any, can be gained about the air mass in which the aircraft is flying?

050 2257 The Atmosphere

Its average temperature is the same as ISA It is colder than ISA There is insufficient information to make any assumption It is warmer than ISA

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65-At an altitude of 1650 feet AMSL, a temperature of +15°C is measured. What will the temperature be at an altitude of 8200 feet, if you consider the temperature gradient of the Standard Atmosphere?

050 1

-2°C 0°C +2°C +4°C

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66-Which of the following changes of state is known as freezing?

050 15949 Thermodynamics

Liquid to gas Gas to solid Solid to liquid Liquid to solid

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67-Rime ice forms through the freezing onto aircraft surfaces of

050 1558 Flight Hazards

snow. large supercooled water drops. water vapour. small supercooled water drops.

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68-What types of cloud will you see flying at FL 50 towards a warm front?

050 1095 Air Masses and Fronts

At some 800 km CS, later AS, and at some 300 km NS until the front At some 500 km AS, later CS and at some 80 km before the front CB At some 500 km from the front, groups of CB, later at some 250 km thickening AS Mainly clear skies. At some 100 km from the front NS begins

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69-Which of the following statements concerning a cold air pool is correct?

050 15778 Climatology

Direction and speed of movements of cold air pools are difficult to forecast Cold air pools normally disappear at night During summer cold air pools are more active over the sea than over land areas Cold air pools can only be active for several hours

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70-After a prolonged VMC descent in very cold air, you penetrate a humid air mass. What type of icing will you encounter?

050 10854 Flight Hazards

Smooth icing Rime ice Hoar frost Clear ice

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71-A cold front is approaching from the Balkans to Istanbul. What would you most likely expect?

050 1

Lenticularis clouds Rain showers virga subsidence

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72-In a warm front occlusion

050 4096 Uncategorized Wind

the cold air is lifted the warm front becomes a front aloft the warm air is lifted the warm front overtakes the cold front

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73-When a mass of unsaturated air descends, what effect will it have on relative humidity?

050 1208 Thermodynamics

It remains constant. It decreases. It increases up to 100%, then remains stable. It increases.

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74-Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence?

050 10959 Wind

Looking downstream, the area to the right of the core. In the core of the jet stream. Above the core in the boundary between warm and cold air. Looking downstream, the area to the left of the core.

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75-Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence?

050 2047 Wind

In the core of the jet stream. Above the core in the boundary between warm and cold air. Looking downstream, the area to the right of the core. Looking downstream, the area to the left of the core.

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76-If Paris reports a wind of 30012KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

050 2537 Wind

27020KT 30025KT 33025KT 23030KT

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77-If Paris reports a wind of 16020KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground?

050 2536 Wind

17015KT 16030KT 19040KT 14020KT

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78-If Paris reports a wind of 08010KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

050 2535 Wind

11020KT 08005KT 08015KT 05020KT

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79-If Paris reports a wind of 19015KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

050 2534 Wind

16020KT 22010KT 25025KT 22030KT

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80-What degree of turbulence, if any, is likely to be encountered while flying through a cold front in the summer over Central Europe at FL 100?

050 1251 Wind

Moderate turbulence in NS cloud. Severe turbulence in CB cloud. Light turbulence in ST cloud. Light turbulence in CB cloud.

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81-What information is required to calculate a lowest usable flight level from a given minimum safe altitude?

050 1546 The Atmosphere

Highest value of QNH and the highest positive temperature deviation from ISA Lowest value of QNH and the lowest negative temperature deviation from ISA Highest value of QNH and the highest negative temperature deviation from ISA. Lowest value of QNH and the highest negative temperature deviation from ISA.

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82-The main factor which contributes to the formation of very low clouds ahead of a warm front is the

050 4045 Air Masses and Fronts

saturation of the warm air by rain falling into it and evaporating warm air moving over a cold surface saturation of the cold air by rain falling into it and evaporating reduction of outgoing radiation due to clouds

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83-Seen from the surface, the passage of a warm front is characterized by which of the following cloud types?

050 1

Cirrostratus, Cirrocumulus, Altostratus, Nimbocumulus, Stratus. Cirrostratus, Cirrocumulus, Cumulus, Nimbostratus, Fractostratus. Cirrus, Cirrocumulus, Altocumulus, Altostratus Cumulus, Cumulus Fractus Cirrus, Cirrostratus, Altostratus, Nimbostratus, Stratus.

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84-You plan a flight over a mountain range at a true altitude of 15000 FT/AMSL. The air is on an average 15°C colder than ISA, the pressure at sea level is 1003 hPa. What approximate indication should the altimeter (setting 1013.2 hPa) read?

050 1548 The Atmosphere

15690 FT. 16230 FT. 13830 FT. 14370 FT.

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85-An aircraft flies into freezing rain in an area with a temperature below 0°C. The type of icing it will most likely encounter is

050 10857 Uncategorized Wind

granular frost rime ice clear ice hoar frost

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86-The approximate inclined plane of a warm front is:

050 1267 Air Masses and Fronts

1/50 1/500 1/150 1/300

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87-Thunderstorms can occur on a warm front if the

050 4119 Flight Hazards

cold air is moist and the environmental lapse rate exceeds the saturated adiabatic lapse rate warm air is moist and the environmental lapse rate is less than the saturated adiabatic lapse rate warm air is moist and the environmental lapse rate exceeds the saturated adiabatic lapse rate cold air is moist and the environmental lapse rate is less than the dry adiabatic lapse rate

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88-Cold air pools

050 10872 Uncategorized Wind

only occur in winter only occur at mid-latitudes can easily be recognized on synoptic surface charts are most evident in the temperature and wind fields of the upper levels

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89-A cold air pool

050 4099 Wind Uncategorized

develops usually in winter when very unstable maritime polar or maritime arctic air currents stream southwards along the eastern side of an extensive ridge of high pressure, in association with occluded systems is usually most evident in the circulation and temperature fields of the middle troposphere and may show little or no sign on a surface chart occurs frequently in winter to the south of the Alps when this region is under the influence of cold north-westerly airstream normally disappears at night and occurs almost exclusively in summer

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90-Under which condition does pressure altitude have the same value as density altitude ?

050 1

When the altimeter setting is 1013,2 hPa. At standard temperature. When the altimeter has no position error. At sea level when the temperature is 0°C.

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91-It is raining and the outside air temperature is -5°C. What would you decide if you have a propeller to operate in non-icing conditions only?

050 1

I would not fly because I know that freezing rain causes rime ice. I would decide to fly. I would not fly because I know that freezing rain causes clear ice. I would fly because freezing rain improves aircraft performance.

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92-An aircraft flying in the southern hemisphere at 2000 feet, has to turn to the right in order to allow for drift. In which direction, relative to the aircraft, is the centre of low pressure ?

050 2530 Wind

To the left. To the right. Behind. In front.

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93-A stationary front is a front in which:

050 13654 Air Masses and Fronts

there are never frontal clouds. there is no difference in temperature between the two air masses. there is no wind on both sides of the front. there is no horizontal motion perpendicular to the front.

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94-The average slope of a cold front is in the order of:

050 13812 Air Masses and Fronts

1:80 1:10 1:800 1:500

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95-The cold front is indicated with a number at position:

050 1361 Meteorological Information

3 4 2 1

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96-You are approaching to an airmass with a temperature of 6 C at 10000ft. Which altitude should you be in order to avoid clear icing?

050 1

12000 ft 6000 ft 14000 ft 9000 ft

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97-An aircraft is flying in the southern hemisphere at low altitude (less than 2000 feet) and going directly away from a centre of low pressure. What direction, relative to the aircraft, does the wind come from ?

050 1092 Wind

From the left and slightly on the nose From the left and slightly on the tail From the right and slightly on the nose From the right and slightly on the tail

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98-What intensity and type of aircraft icing is likely to occur at FL 100 in a thunderstorm, with the freezing level at 7000 FT?

050 13603 Flight Hazards

Moderate to severe icing due to rime ice. Light icing due to clear ice. Moderate to severe icing due to clear ice. Light icing due to rime ice.

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99-Which one of the areas you can have windshear? I) Friction Layer II) ın clouds III) Fair weather

050 1

I, II, III I II I, II

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100-A night in January has been cold and clear. In the forenoon of the next day an airfield is in IMC due to fog which extends to a height of 700 ft. A heavily laden aircraft departs and, when breaking through the top of the fog, experiences temporary bumpiness and a sudden decrease in climb rate.
Mark the answer that states the most probable reason for the altered aircraft performance.

050 16751 Flight Hazards

The aircraft is under influence of a mountain breeze (descending air from the surrounding hills due to the incident sunshine). The aircraft suffers reduced lift and thrust due to a temperature inversion at the top of the fog. The additional weight gained by water which has been gathered on wings and fuselage during flight through the fog reduces the lift. The water which has been gathered during flight through the fog modifies the aerodynamic properties of the aircraft, thus reducing lift.

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1-If you have to fly through a warm front when freezing level is at 10000 feet in the warm air and at 2000 feet in the cold air, at which altitude is the probability of freezing rain the lowest ?

4-At which front system is freezing rain oberved?

5-Which of the following conditions are you most likely to encounter when approaching an active warm front at medium to low level ?

6-Cold front undercuts the warm air because of;

7-How does a pilot react to heavy freezing rain at 2000 FT/AGL, when he is unable to deice, nor land?

8-An occlusion is called a warm occlusion when the cold air

9-You are at FL120 with an outside air temperature is -2°C. Where would you find the freezing level?

10-Which of the following cloud types will most probably form when cold moist air moves over a warm surface?

11-If you are flying at FL 120 and the outside temperature is -2°C, at what altitude will the "freezing level" be?

12-In which of the following situations can freezing rain be encountered ?

13-Which of the following are favourable conditions for the formation of freezing rain?

14-After passing at right angles through a very active cold front in the direction towards the cold air, what will you encounter at FL 50, in the northern hemisphere immediately after a marked change in temperature?

15-An aircraft is flying over the sea at FL 100, with a true altitude of 10000 feet; local QNH is 1003 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

16-Which statement concerning the cold front and warm front of a frontal depression in the northern hemisphere is correct?

17-Which of the following combinations is most characteristic of unstable air behind a cold front?

18-The lowest cloud type observed is Stratus fractus, and there is moderate continuous rain. The area in which you are at this moment is most likely situated

19-In wintertime stratus is often formed when warm maritime air moves over cold land. How can such clouds be classified?

20-On an aerodrome, when a warm front is approaching

21-An aircraft descends in layered clouds; the freezing level is situated at FL 60.At what levels is the probability for airframe icing the highest?

22-An aircraft descents in layered clouds; the freezing level is situated at FL 60. At what levels is the probability for airframe icing the highest?

23-In case of fronts, what cloud formation is most likely to occur at low levels when a warm air mass overrides a cold air mass?

24-The slope and speed of a warm front compared to the slope and speed of a cold front is in general:

25-How does freezing rain develop?

27-Continuous freezing rain is observed at an airfield. Which of the four diagrams is most likely to reflect temperatures above the airfield concerned?

28-How do air masses move at a warm front ?

29-The air mass in the warm sector of a polar front is:

31-An occlusion has the characteristics of a warm front when:

32-You are flying at a constant indicated altitude with the QNH of 1015 set within the subscale and you notice the outside air temperature has been falling constantly. What can you expect to have happened to your true altitude?

33-Where is the cold air in an occlusion that has the characteristics of a cold front?

34-An aircraft is approaching a cold front from the warm air mass side at FL 270 and experiencing moderate to severe turbulence. A jet stream is forecast to be at FL 310. The shortest way to get out of this turbulence is by:

35-How do you recognize a cold air pool?

36-What cloud type can produce freezing rain?

37-When in the upper part of a layer warm air is advected the

38-When warm air moves over a colder surface, __________.

39-Advection of very cold air over a warm sea current can cause:

40-When Air density will be lowest at the Earth's surface:

41-When cold air moves over a warmer surface, __________.

42-Which airport, at 1200 UTC, has the lowest probability of precipitation?

43-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?

44-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?

45-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?

46-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?

47-What type of precipitation would you expect at an active unstable cold front?

48-What is the relative movement of the two air masses along a cold front ?

49-Where is the coldest air to be found, in an occlusion with cold front characteristics?

50-At a cold front:

51-You have been flying for some time in dense layered cloud. The outside air temperature is -25°C. Which of the following statements is true?

52-What type of fronts are most likely to be present during the winter in Central Europe when temperatures close to the ground are below 0°C, and freezing rain starts to fall?

53-At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?

54-At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?

55-Which type of precipitation is the most dangerous at the time of warm front?

56-Where is the projection of the polar front jet stream on the surface most likely to be found in relation to the cold and warm fronts of a depression?

57-The occurrence of freezing rain at FL 60 is most likely in square

58-When warm moist air moves over a colder surface, __________.

59-Which of the following is typical for the passage of an active cold front in the summer ?

60-An aircraft is flying through the Alps on a very cold winter's day. The regional QNH is 1013 hPa. During the flight, you circle around a mountain at an altitude of its summit. What reading will the aneroid altimeter give, compared to the elevation of the summit?

61-When cold moist air moves over a warmer surface, __________.

62-An aircraft is flying over the sea at FL 120, with a true altitude of 12000 feet; local QNH is 1013 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

63-An aircraft is flying over the sea at FL 90; the true altitude is 9100 feet; local QNH is unknown. What assumption, if any, can be made about the air mass in which the aircraft is flying ?

64-During a flight over the sea at FL 135, the true altitude is 13500 feet; local QNH is 1019 hPa. What information, if any, can be gained about the air mass in which the aircraft is flying?

65-At an altitude of 1650 feet AMSL, a temperature of +15°C is measured. What will the temperature be at an altitude of 8200 feet, if you consider the temperature gradient of the Standard Atmosphere?

66-Which of the following changes of state is known as freezing?

67-Rime ice forms through the freezing onto aircraft surfaces of

68-What types of cloud will you see flying at FL 50 towards a warm front?

69-Which of the following statements concerning a cold air pool is correct?

70-After a prolonged VMC descent in very cold air, you penetrate a humid air mass. What type of icing will you encounter?

71-A cold front is approaching from the Balkans to Istanbul. What would you most likely expect?

72-In a warm front occlusion

73-When a mass of unsaturated air descends, what effect will it have on relative humidity?

74-Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence?

75-Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence?

76-If Paris reports a wind of 30012KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

77-If Paris reports a wind of 16020KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground?

78-If Paris reports a wind of 08010KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

79-If Paris reports a wind of 19015KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?

80-What degree of turbulence, if any, is likely to be encountered while flying through a cold front in the summer over Central Europe at FL 100?

81-What information is required to calculate a lowest usable flight level from a given minimum safe altitude?

82-The main factor which contributes to the formation of very low clouds ahead of a warm front is the

21-An aircraft descends in layered clouds; the freezing level is situated at FL 60.
At what levels is the probability for airframe icing the highest?