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ATPL 50 METEOROLOGY |
| 50.06 AIR MASSES AND FRONTS |
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1
The qnh is equal to the qfe if
The elevation = 0 |
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2
Which of the following conditions gives the highest value of the qnh?
Qfe = 995 hpa, elevation = 1600 ft (488m) |
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3
The pressure altitude is equal to the true altitude if
Standard atmospheric conditions occur altitude |
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4
You must make an emergency landing at sea. the qnh of a field on a nearby island with an elevation of 4000 ft is 1025 hpa and the temperature is -20° c. what is your pressure altimeter reading when landing if 1025 hpa is set in the subscale?
Less than 0 ft |
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5
A wide body takes off on a clear night in dhahran, saudi arabia. shortly after take off the aircraft"s rate of climb drops to zero. this can be due to
A very strong temperature inversion |
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6
The most frequent wind direction in a valley caused by thermal effects is toward the :
Mountain during daylight hours. |
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7
Which of the following conditions would cause the altimeter to indicate a lower altitude than that actually flown ?
Air temperature higher than standard |
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8
For a given airfield the qfe is 980 hpa and the qnh is 1000 hpa. the approximate elevation of the airfield is
160 metres |
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9
After landing at an aerodrome (aerodrome elevation 1715 ft), the altimeter indicates an altitude of 1310 ft. the altimeter is set to the pressure value of 1013 hpa. what is the qnh at this aerodrome?
1028 hpa. |
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10
An aircraft lands at an airport (airport elevation 1240 ft, qnh 1008 hpa). the altimeter is set to 1013 hpa. the altimeter will indicate :
1375 ft. |
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11
During a flight at fl 100 from marseille (qnh 1012 hpa) to palma de mallorca (qnh 1015 hpa), an aircraft remains at a constant true altitude. the reason for this is that :
The air at marseille is warmer than that at palma de mallorca. |
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12
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 indication must the altimeter (setting 1013.2 hpa) read?
16230 ft. |
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13
What is the relationship, if any, between qfe and qnh at an airport situated 50 ft below sea level?
Qfe is greater than qnh. |
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14
What information is required to convert a minimum safe altitude into a lowest usable flight level? subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4
Lowest value of qnh and the highest negative temperature deviation from isa. |
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15
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?
14100 ft. |
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16
You are flying at fl 130, and your true altitude is 12000 ft. what is the temperature deviation from that of the standard atmosphere at fl 130 (qnh 1013,2 hpa) ?
Isa -20° c |
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17
What pressure is
The pressure at field defined as qfe? |
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18
The qnh of an airport at sea level is 983 hpa and the temperature deviation from isa is - 15° c below fl 100. what is the true altitude of fl 100?
8590 ft. |
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19
Which statement is true ? 1013.25 hpa at any time only for a station at msl well as higher than 1013.25 hpa
Qnh can be lower as 1013.25 hpa |
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20
When the subscale is set to the qnh of an airfield the pressure altimeter indicates
Elevation while landing |
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21
Which of the following statements is true ?
Qnh can be equal to qfe |
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22
Before landing, an altimeter set to qfe indicates
In standard atmosphere, the height of the aircraft above the official airport elevation. |
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23
Assume that an aircraft is flying in the northern hemisphere at the 500 hpa pressure surface on a heading of 270 degrees. following statements is correct?
If in this pressure surface the wind comes from the direction 360 degrees, then true altitude is increasing which of the |
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24
An aircraft is flying at fl 180 on the northern hemisphere with a crosswind from the left. which of the following is correct concerning its true altitude ?
It decreases |
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25
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.
Assuming that the msl pressure is 1013.25 hpa the true altitude of an aircraft would actually be higher than the indicated altitude. |
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26
If atmospheric conditions exist such that the temperature deviation is isa +10° c in the lower troposphere up to 18000 ft, what is the actual layer thickness between fl 60 and fl 120 ?
6240 ft. |
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27
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?
At a temperature greater than or equal to that of the isa and where the qnh is greater than or equal to 1013 hpa |
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28
A vertical spacing of 1000 ft, is the standard required separation between two fl. under conditions of cold air advection (isa -15° c), what would the true vertical separation be?
Less than 1000 ft |
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29
Which condition lowers true altitude as compared to pressure altitude to a position where flight over mountains could be dangereous?
W arm depression. |
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30
A mountain breeze
Up the slope during the night. |
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31
A high pressure area (shallow pressure gradient) covers an area of the mediterranean sea and its nearby airport. what surface wind direction is likely at the airport on a sunny afternoon?
Land to sea. |
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32
In a land- and sea-
During the night and is breeze circulation the land-breeze blows : |
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33
In a mountain-valley wind circulation, the mountain wind blows
At night down from the mountains |
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34
The sea breeze is a wind from the sea atmosphere in daytime
Occurring only in the lower layers of the |
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35
When otherwise calm shore of a large body of water will experience wind
From the water in daytime and from the water at night |
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36
During the climb after take-off, the altimeter setting is adjusted at the transition altitude. if the local qnh is 1023 hpa, what will happen to the altimeter reading during the resetting procedure ?
It will decrease |
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37
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? subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4
20660 feet |
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38
(for this question use annex 050-4249a) an aircraft is flying from point a to point b on the upper level contour chart. the altimeter setting is 1013,2 hpa. which of these statements is correct?
The true altitude will be higher at b than at a |
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39
(for this question use annex 050-4248a) an aircraft is flying from point a to point b on the upper level contour chart. the altimeter setting is 1013,2 hpa. which of these statements is correct?
The true altitude will be higher at b than at a |
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40
(for this question use annex 050-4247a) an aircraft is flying from point a to point b on the upper level contour chart. the altimeter setting is 1013,2 hpa. which of these statements is correct?
The true altitude will be higher at a than at b |
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41
During the climb after takeoff, the altimeter setting is adjusted at the transition altitude. if the local qnh is 966 hpa, what will happen to the altimeter reading during the resetting procedure?
It will increase |
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42
An aircraft is descending to land under ifr. if the local qnh is 1009 hpa, what will happen to the altitude reading when the altimeter is reset at the transition level ?
It will decrease |
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43
An aircraft is flying through the alps on a warm summer"s day. the weather is fine, and there is a high pressure system in the area. during the flight, a mountain is passed at an altitude of its summit. what reading will the aneroid altimeter give, compared to the summit"s elevation? subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4
A lower altitude than the elevation of the summit |
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44
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?
A higher altitude than the elevation of the summit |
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45
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 ?
It is warmer than isa |
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46
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 ?
Its average temperature is the same as isa |
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47
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 ? subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4
There is insufficient information to make any assumption |
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48
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?
It is colder than isa assumption |
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49
During a flight over the sea at fl 100 from marseille (qnh 1016 hpa) to palma de mallorca (qnh 1016 hpa), the true altitude is constantly decreasing. what is the probable reason for this ?
The air at marseille is warmer than that at palma de mallorca |
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50
During a flight over the sea at fl 100 from marseille (qnh 1012 hpa) to palma de mallorca (qnh 1012 hpa), the true altitude is constantly increasing. what action, if any, should be taken ?
None, the reason for the change is that the air around palma is warmer than the air around marseille |
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51
An aircraft flying at fl 100 from marseille (qnh 1012 hpa) to palma de mallorca (qnh 1006 hpa) experiences no change to true altitude. the reason for this is that :
The air at palma de mallorca is warmer than that at marseille |
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52
(for this question use annex 050-4246a) an aircraft is flying from point a to point b on the upper level contour chart. the altimeter setting is 1013,2 hpa. which of these statements is correct?
The true altitude will be higher at a than at b |
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53
After landing at an aerodrome (qnh 993 hpa) it is noticed that the altimeter is still set to 1013,2 hpa and that it reads 1200 feet. what is the elevation of the aerodrome above mean sea level ?
660 feet. |
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54
An aircraft lands at an airport (airport elevation 540 ft, qnh 993 hpa) with the altimeter set to 1013 hpa. what will it indicate ?
1080 ft |
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55
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?
15090 feet |
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56
The barometric compensator of an altimeter is locked on reference 1013.2 hpa. the aircraft has to land on a point with an elevation of 290 feet where the qnh is 1023 hpa. assuming that 1 hpa corresponds to 27 ft, the reading on the altimeter on the ground will be:
20 ft. |
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57
An aircraft is flying at fl 80. the local qnh is 1000 hpa. after the second altimeter has been adjusted to the local qnh, the reading will be approximately
7650 ft. |
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58
In geneva, the local qnh is 994 hpa. the elevation of geneva is 1411 ft. the qfe adjustment in geneva is
942 hpa. |
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59
An altimeter adjusted to 1013 hpa indicates an altitude of 3600 ft. should this altimeter be adjusted to the local qnh value of 991 hpa, the altitude indicated would be
3006 ft. |
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60
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?
11520 feet |
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61
An aircraft is approaching under visual flight rules an airfield whose runway is parallel to the coast. when downwind over the sea, the airfield is on the left. what wind effect should be anticipated on final approach and landing during a sunny afternoon ? 6 switzerl an aircraft is tailwind headwind crosswind from the crosswind from the left 0 0 -1 0 approaching under visual flight rules an airfield whose runway is parallel to the coast. when downwind over the sea, the airfield is on the right. what wind effect should be anticipated on final approach and landing during a sunny afternoon?
Crosswind from the left |
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62
Which of the following is true of a land breeze? 5 switzerl if paris reports a wind 33025kt 23030kt 30025kt 27020kt -1 0 0 0 of 30012kt on the metar, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?
It blows from water to land |