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Which of the following phenomena has to be mentioned in a sigmet ? [ MCQ aircraft ]

Question 155-1 : Heavy duststorm strong inversion thick fog snow and ice on the runway

Admin .icao annexe 3 met services .sigmet or significant meteorological information is a weather advisory that contains meteorological information concerning the safety of all aircraft .the following are examples of weather phenomena that may be described in a sigmet . thunderstorms. cyclones tropical revolving storms . severe turbulence. severe icing. severe mountain waves. dust or sand storms. volcanic ash exemple 255 Heavy duststorm.Heavy duststorm.

Which of the following phenomena has to be mentioned in a sigmet ?

Question 155-2 : Volcanic ash strong inversion thick fog snow and ice on the runway

Admin .icao annexe 3 met services .sigmet or significant meteorological information is a weather advisory that contains meteorological information concerning the safety of all aircraft .the following are examples of weather phenomena that may be described in a sigmet . thunderstorms. cyclones tropical revolving storms . severe turbulence. severe icing. severe mountain waves. dust or sand storms. volcanic ash exemple 259 Volcanic ash.Volcanic ash.

On an upper wind and temperature chart ?

Question 155-3 : The pressure is constant all over the chart the temperature is constant all over the chart the height is constant all over the chart the wind increases from south to north

exemple 263 The pressure is constant all over the chart.The pressure is constant all over the chart.

What is the most likely forecast lowest cloud base that can be expected during ?

Question 155-4 : 1500 feet 2000 feet 3000 feet 800 feet

Admin .the tempo group is used for any conditions in wind visibility weather or sky condition which are expected to last for generally less than an hour at a time occasional and are expected to occur during less than half the time period the tempo indicator is followed by a four digit group giving the beginning hour and ending hour of the time period during which the temporary conditions are expected only the changing forecast meteorological conditions are included in tempo groups the omitted conditions are carried over from the previous time group .becmg 2123 21005kt 9999 sct015 bkn080 prob40 tempo 2306 6000 sct008 . sct008 concerns less than half of the period so the most likely conditions to expect will be cloud base to 1500 feet exemple 267 1500 feet.1500 feet.

What is the lowest visibility forecast for bangkok at eta 1400 utc .taf vtbd ?

Question 155-5 : 5 km 1200 metres 6 km 10 km or more

Admin .at eta 1400 utc the taf indicates ' tempo 2811/2818 04010g20kt 5000 tsra sct009 bkn014 bkn018cb '.the tempo group is used for any conditions in wind visibility weather or sky condition which are expected to last for generally less than an hour at a time occasional and are expected to occur during less than half the time period .it means that between 1100 utc and 1800 utc the visibility could come down to 5000 m and this is the lowest visibility forecast for arrival at 1400 utc exemple 271 5 km.5 km.

What is the lowest probable cloud base forecast for eta 1700 utc at kingston ?

Question 155-6 : 1000 ft 1000 m 1500 ft 1500 m

Admin .the lowest probable cloud base forecast for eta 1700 utc at kingston is 1000 ft .'becmg 1613/1615' changes the lowest cloud base to 1500 ft 1 to 2 oktas few015cb but there is a 30% probability prob30 tempo that there could be 3 to 4 oktas at 1000 ft sct010 exemple 275 1000 ft.1000 ft.

What is the lowest cloud base forecast for arrival at geneva eta 1200 utc .taf ?

Question 155-7 : 500 ft 500 m 1000 ft 1000 m

Admin .taf lsgg 020900z 021019 18007kt 9999 sct020 bkn100 becmg 1114 8000 ra sct010 ovc020 prob30 tempo 1018 vrb10g25kt tsra sct005 bkn015cb=.the tempo group is used for any conditions in wind visibility weather or sky condition which are expected to last for generally less than an hour at a time occasional and are expected to occur during less than half the time period .at 1200 utc the lowest cloud base forecast is 500 ft tempo between 10h00 to 18h00 utc .for information a cloud base is few or sct a cloud ceiling is bkn or ovc coverage of one half of the sky exemple 279 500 ft.500 ft.

What is the height of the lowest cloud forecast for bangkok at eta 1400 utc ?

Question 155-8 : 900 feet 1200 feet 1400 feet 1800 feet

Admin .at 1400 utc forecast cloud bases are .tempo 1118 04010g20kt 5000 tsra sct009 bkn014 bkn018cb becmg 2024 6000 .sct009 scatered 900 ft agl .bkn014 broken 1400 ft agl .bkn018 broken 1800 ft agl .the lowest cloud base is therefore at 900 feet above ground level exemple 283 900 feet.900 feet.

Why can the following metar not be abbreviated to cavok .dllo 121550z ?

Question 155-9 : Because the cloud base is below the highest minimum sector altitude because there are gusts reported because towering cumulus are observed because thunderstorms are forecast temporary for the next 2 hours

Admin .icao annex 3 amendment 74 .1 no cloud below 5000 ft above airfield level or minimum sector altitude whichever is higher .2 no cb or tcu at any height.3 visibility 10 km or more.4 no significant weather.note highest minimum sector altitude is defined in icao pans ops part 1 definitions as the lowest altitude which may be used under emergency conditions which will provide a minimum clearance of 300 metres 1000 ft above all objects located in an area contained within a sector of a circle of 46 km 25 nautical miles radius centred on a radio aid to navigation exemple 287 Because the cloud base is below the highest minimum sector altitude.Because the cloud base is below the highest minimum sector altitude.

What does the code taf amd mean ?

Question 155-10 : Revised taf no change compared with the previous taf weather conditions expected to affect the safety of normal operations delayed issue of a taf

Admin .the report type header will always appear as the first element in the taf forecast there are two types of taf reports a routine forecast taf and an amended forecast taf amd an amended taf is issued when the current taf no longer adequately describes the ongoing weather or the forecaster feels the taf is not representative of the current or expected weather exemple 291 Revised taf.Revised taf.

What does the code r24r/p1500 mean ?

Question 155-11 : Rvr rwy 24 right above 1500 metres rvr rwy 24 right below 1500 metres snow clearance in progress on rwy 24 right useable runway length 1500 metres rvr rwy 24 right 1500 metres

exemple 295 Rvr rwy 24 right above 1500 metres.Rvr rwy 24 right above 1500 metres.

What conditions are necessary for vertical visibility to be reported ?

Question 155-12 : Whenever the sky is obscured by fog or heavy precipitation and the height of the cloud base cannot be measured it is always reported whenever the lowest ceiling is below 1500 ft above ground whenever the lowest cloud base is below 1500 ft above ground

exemple 299 Whenever the sky is obscured by fog or heavy precipitation and the height of the cloud base cannot be measured.Whenever the sky is obscured by fog or heavy precipitation and the height of the cloud base cannot be measured.

The term cavok is used when weather conditions are ?

Question 155-13 : 9999 nsc nsw 9000 skc nosig 8000 hazardous wx nil nosig 9999 nsc nosig

Admin .icao annex 3 amendment 74 .when the following conditions occur simultaneously at the time of observation we can use the abbreviation of c eiling a nd v isibility ok cavok .1 no cloud below 5000 ft above airfield level or minimum sector altitude whichever is higher .2 no cb or tcu at any height.3 visibility 10 km or more.4 no significant weather.visibility 10 km or more is abbreviated in 9999 .nsc means 'no significant cloud' .nsw means 'no significant weather' exemple 303 9999, nsc, nsw.9999, nsc, nsw.

How is a ceiling defined ?

Question 155-14 : Height above ground or water of the lowest layer of cloud below 20000 ft covering more than half of the sky height above ground or water of the lowest layer of cloud independent on the amount of clouds height above ground or water of the lowest layer of cloud that contributes to the overall overcast height above ground or water of the highest layer of cloud or obscuring phenomena aloft that covers 4 oktas or more of the sky

Admin .icao annex 2 rules of the air .ceiling the height above the ground or water of the base of the lowest layer of cloud below 6 000 metres 20 000 feet covering more than half the sky exemple 307 Height above ground or water of the lowest layer of cloud below 20000 ft covering more than half of the sky.Height above ground or water of the lowest layer of cloud below 20000 ft covering more than half of the sky.

In the metar code the abbreviation vc indicates ?

Question 155-15 : Present weather between approximately 8 and 16 km of the aerodrome reference point present weather within a range of 8 km but not at the airport present weather within the approach area present weather at the airport

Admin .icao annex 3 meteorological service .vicinity between approximately 8 and 16 km of the aerodrome reference point and used only in metar and speci exemple 311 Present weather between approximately 8 and 16 km of the aerodrome reference point.Present weather between approximately 8 and 16 km of the aerodrome reference point.

In the metar code the abbreviation vcbldu means ?

Question 155-16 : Blowing dust in the vicinity an active duststorm an active sandstorm an active dust and sandstorm

exemple 315 Blowing dust in the vicinity.Blowing dust in the vicinity.

Which of the following statements is an interpretation of the metar .00000kt ?

Question 155-17 : Rvr for runway 14 800 metres vertical visibility 100 feet calm visibility improving to 800 metres in the next 2 hours visibility 200 metres rvr for runway 16 1500 metres temperature 3°c vertical visibility 100 metres visibility 200 feet rvr for runway 16 more than 1500 metres vertical visibility 100 feet fog with hoar frost visibility for runway 14 800 metres fog with hoar frost rvr for runway 16 more than 1500 metres

Admin .00000kt surface wind direction and speed calm .0200 visibility 200 metres .r14/0800u runway 14 visibility 800 meters runway visual range value shows an upward tendency . annex 3 if the runway visual range values during the 10 minute period have shown a distinct tendency such that the mean during the first 5 minutes varies by 100 m or more from the mean during the second 5 minutes of the period this should be indicated when the variation of the runway visual range values shows an upward or downward tendency this should be indicated by the abbreviation 'u' or 'd' respectively in circumstances when actual fluctuations during the 10 minute period show no distinct tendency this should be indicated using the abbreviation 'n' .r16/p1500u runway 16 visibility 1500 m p runway visual range is above the maximum value that can be determined by the system in use runway visual range value shows an upward tendency .fzfg freezing fog .m03/m03 temperature 3°c dew point 3°c .q1022 qnh 1022 hpa .becmg 0800 visibility improving to 800 metres in the next 2 hours exemple 319 Rvr for runway 14: 800 metres, vertical visibility 100 feet, calm, visibility improving to 800 metres in the next 2 hours.Rvr for runway 14: 800 metres, vertical visibility 100 feet, calm, visibility improving to 800 metres in the next 2 hours.

Which of the four answers is a correct interpretation of data from the ?

Question 155-18 : Visibility 400 m rvr for runway 16 1000 m with no distinct tendency dew point 2°c freezing fog rvr for runway 16 1000 m with no distinct tendency visibility increasing in the next 2 hours to 2000 m vertical visibility 300 m temperature 2°c rvr for runway 14 1500 m visibility 400 m qnh 1026 hpa wind 160° at 3 kt visibility 1000 m rvr 400 m freezing level at 300 m variable winds temperature 2°c

Admin .metar for geneva issued on the 5th of the month at 08h40 utc .16003kt surface wind direction 160° and speed 3 kt .0400 visibility 400 metres .r14/p1500 runway 14 visibility 1500 m p runway visual range is above the maximum value that can be determined by the system in use .r16/1000 runway 16 visibility 1000 m .fzfg freezing fog .vv003 vertical visibility 300 feet .m02/m02 temperature 2°c dew point 2°c .q1026 qnh 1026 hpa .becmg 2000 br = visibility improving to 2000 metres in the next 2 hours with mist br is reported when visibility is at least 1000 m but not more than 5000 m exemple 323 Visibility 400 m, rvr for runway 16 1000 m with no distinct tendency, dew point -2°c, freezing fog.Visibility 400 m, rvr for runway 16 1000 m with no distinct tendency, dew point -2°c, freezing fog.

Which of these four metar reports suggests that a thunderstorm is likely in the ?

Question 155-19 : 201350z 21005kt 9999 sct040cb sct100 26/18 q1016 tempo 24018g30kt ts = 201350z 16004kt 8000 sct110 ovc220 02/m02 q1008 nosig= 201350z 34003kt 0800 sn vv002 m02/m04 q1014 nosig= 201350z 04012kt 3000 ovc012 04/03 q1022 becmg 5000=

Admin .ts thunder storm exemple 327 201350z 21005kt 9999 sct040cb sct100 26/18 q1016 tempo 24018g30kt ts =201350z 21005kt 9999 sct040cb sct100 26/18 q1016 tempo 24018g30kt ts =

Which of the following weather reports could be in accordance with the ?

Question 155-20 : Lszb 28012kt 9999 ovc100 16/12 q1012 becmg 5000 ra= lfsb 24008kt 9999 sct050 18/11 q1017 rera nosig= lszh vrb02kt 9000 bkn080 21/14 q1022 nosig= lsgg 22006kt 9999 bkn090 17/15 q1008 rera nosig=

Admin .icao annex 3 amendment 74 .when the following conditions occur simultaneously at the time of observation .1 no cloud below 5000 ft above airfield level or minimum sector altitude whichever is higher .2 no cb or tcu at any height.3 visibility 10 km or more.4 no significant weather..lszh has a visibility less than 10 km .lfsb has cloud below minimum sector altitude msa 6000 ft cloud base 5000 ft .lsgg has cloud below minimum sector altitude msa 12000 ft cloud base 10000 ft .note highest minimum sector altitude is defined in icao pans ops part 1 definitions as the lowest altitude which may be used under emergency conditions which will provide a minimum clearance of 300 metres 1000 ft above all objects located in an area contained within a sector of a circle of 46 km 25 nautical miles radius centred on a radio aid to navigation exemple 331 Lszb 28012kt 9999 ovc100 16/12 q1012 becmg 5000 -ra=Lszb 28012kt 9999 ovc100 16/12 q1012 becmg 5000 -ra=

Which of the following weather reports could be in accordance with the ?

Question 155-21 : 27019g37kt 9999 bkn050 18/14 q1016 nosig = 34004kt 7000 mifg sct260 09/08 q1029 becmg 1600 = 00000kt 0100 fg vv001 11/11 q1025 becmg 0500 = 26012kt 8000 shra bkn025 16/12 q1018 nosig =

Admin .icao annex 3 amendment 74 .when the following conditions occur simultaneously at the time of observation .1 no cloud below 5000 ft above airfield level or minimum sector altitude whichever is higher .2 no cb or tcu at any height.3 visibility 10 km or more.4 no significant weather exemple 335 27019g37kt 9999 bkn050 18/14 q1016 nosig =27019g37kt 9999 bkn050 18/14 q1016 nosig =

Which of the following statements is correct ?

Question 155-22 : Fg is reported only when visibility is reduced by water droplets or ice crystals to less than 1000 m hz is reported only when visibility is reduced to 2000 m or less vc denotes not at the aerodrome but not within 8 nm when br is reported then the visibility is more than 1000 m but less than 8000 m

exemple 339 Fg is reported only when visibility is reduced by water droplets or ice crystals to less than 1000 mFg is reported only when visibility is reduced by water droplets or ice crystals to less than 1000 m

Flight from bordeaux to amsterdam eta 2100 utc what lowest cloud base is ?

Question 155-23 : 500 ft 250 ft 500 m 800 ft

Admin .tempo 18h to 23h broken 005 = 500ft exemple 343 500 ft.500 ft.

What is the lowest cloud base that can be expected from the forecast for 1500 ?

Question 155-24 : 1000 feet 3000 feet 1300 feet 1500 feet

exemple 347 1000 feet1000 feet

What is the symbol for hail on a significant weather chart . 373 ?

Question 155-25 : Symbol 2 symbol 1 symbol 3 symbol 4

Admin .icao annex 3 meteorological service for international air navigation . 547 exemple 351 Symbol 2.Symbol 2.

To which type of message does the following text belong .mbst apch rwy26 rep at ?

Question 155-26 : Wind shear warning sigmet aerodrome warning airmet

Cqb15 july 2011 exemple 355 Wind shear warning.Wind shear warning.

What is determined by a transmissometer ?

Question 155-27 : Visibility runway visual range air density vertical visibility height of cloud base

exemple 359 Visibility, runway visual range.Visibility, runway visual range.

Which of the following constant pressure charts would be most relevant for ?

Question 155-28 : 250 hpa 400 hpa 300 hpa 200 hpa

Cqb15 july 2011 ..there is a few questions at the exam that take information directly from that table below write these down on a sticky and have them on the wall beside you .1013 hpa = msl.850 hpa = fl50.700 hpa = fl100.500 hpa = fl180.300 hpa = fl300.200 hpa = fl390..any others you can interpolate between these and figure it out .the decrease of 1hpa/27ft is only applicable at the lower levels of the troposphere as you go up and air pressure decreases the change of height per 1 hpa increases at msl 1hpa/27ft at fl180 it's 50ft/hpa and at fl390 it's 105ft/hpa exemple 363 250 hpa.250 hpa.

A cold air pool can be best identified by means of ?

Question 155-29 : The isohypses on an upper air chart the isobars on a surface chart the cat areas on a significant weather chart a gamet report

Admin .isohypses contour lines are drawn on a constant pressure chart therefore they indicate the true altitude of a pressure level on an upper air chart as it includes temperature and wind indications you can easily identify a cold air pool you will have an area with light or no wind low temperature exemple 367 The isohypses on an upper air chart.The isohypses on an upper air chart.

What wind direction will occur over the sea at point 'f' . 374 ?

Question 155-30 : South northeast northwest southeast

Admin .we know that the wind blows parallel to the isobars we can see a warm front c a cold front a a warm sector b and a cold occlusion d .note it's a cold occlusion since the line of the occlusion is approximately along the same line as the cold front .with the cold occlusion and the warm sector it's a depression located in the northern hemisphere over the sea angle between wind direction and isobars changes by 10° value to be used in examinations .we can assume that the wind direction at point 'f' is south exemple 371 South.South.

What are the normal and official sources of meteorological information for an ?

Question 155-31 : Volmet broadcast atis all ats units volmet broadcast atis and from the ats units the fic only volmet broadcast atis and from the ats units the twr app and fic only volmet broadcast atis and from the ats units the twr only

Cqb15 august 2011 exemple 375 Volmet broadcast, atis, all ats-units.Volmet broadcast, atis, all ats-units.

Runway visual range is calculated from values derived from ?

Question 155-32 : Transmissometers ceilometers psychrometers anemometers

Admin .the meteorological measurement of runway visual range is performed by transmissometers or forward scatter meters placed on the airport exemple 379 Transmissometers.Transmissometers.

What is an 'aerodrome warning' ?

Question 155-33 : A message issued by a meteorological office concerning the meteorological conditions which could adversely affect aircraft on ground including parked aircraft and the aerodrome facilities and services a message issued by a meteorological watch office concerning the occurrence and/or expected occurrence of specified en route weather phenomena which may affect the safety of aircraft operations a message prepared by a meteorological office concerning wind shear which could adversely affect aircraft on the approach path or take off path or during circling approach between runway level and a specified upper level and aircraft on the runway during the next hour the part of a metar message that is called supplementary information

exemple 383 A message issued by a meteorological office concerning the meteorological conditions which could adversely affect aircraft on ground, including parked aircraft, and the aerodrome facilities and services.A message issued by a meteorological office concerning the meteorological conditions which could adversely affect aircraft on ground, including parked aircraft, and the aerodrome facilities and services.

An aerodrome warning message gives information among other things about ?

Question 155-34 : Ts sn including the expected or observed snow accumulation hoar frost ds sn clearing fzra including the observed braking action gr fg fzra including the observed friction coefficient pl ss ra

exemple 387 Ts, sn including the expected or observed snow accumulation, hoar frost.Ts, sn including the expected or observed snow accumulation, hoar frost.

What are the colours with which a stationary front is shown on a surface chart ?

Question 155-35 : Red and blue violet and red red and green blue and violet

Admin . 488.cold front blue .warm front red exemple 391 Red and blue.Red and blue.

How would the term 'vertical visibility is missing or not measurable' be ?

Question 155-36 : Vv/// vv999 vvmis vv000

exemple 395 Vv///.Vv///.

An aircraft is flying from point a to point b at the flight level corresponding ?

Question 155-37 : Wind speed over a is higher than over b the true altitude will be higher over a than over b wind speed over b is higher than over a the true altitude will be higher over b than over melbourne

The wind arrow at melbourne indicates that the system centred above a is a low depression if you count the contours a is at a lower contour height and therefore true altitude than b which is at a lower contour height than melbourne however the contours are closer and the wind stronger at a than at b exemple 399 Wind speed over a is higher than over b.Wind speed over a is higher than over b.

Which kind of meteorological messages are normally transmitted in a vhf volmet ?

Question 155-38 : Metar / speci taf / special gamet / airmet airep / special

exemple 403 Metar / speci.Metar / speci.

While using the airborne weather radar in order to circumnavigate thunderstorms ?

Question 155-39 : The clear area indicates an area from which no echoes are received however this radar scope provides no assurance of being in vmc while flying in this area the clear area indicates an area from which no n echoes are received an aircraft flying in this area will be in vmc due to the absence of precipitation drops the clear area indicates an area from which no echoes are received because the number of cloud droplets is too small to generate a significant echo thus the pilot will have a good visual sight of the thunderstorm clouds this is a typical radar scope from which the region of clear air turbulence between thunderstorm clouds can be detected

exemple 407 The clear area indicates an area from which no echoes are received. however, this radar scope provides no assurance of being in vmc while flying in this area.The clear area indicates an area from which no echoes are received. however, this radar scope provides no assurance of being in vmc while flying in this area.

Which constant pressure chart is standard for fl 240 ?

Question 155-40 : 400 hpa 600 hpa 300 hpa 500 hpa

exemple 411 400 hpa.400 hpa.

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