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Question 165-1 : With which meteorological phenomena are wind shear conditions mostly associated ? [ Formation assignment ]

Gust fronts low level temperature inversions frontal surfaces

Cqb 15 october 2011 exemple 265 Gust fronts, low level temperature inversions, frontal surfaces.

Question 165-2 : In winter after breaking through a low level inversion during descent and assuming the pilot does not intervene ?

Thrust most likely will increase and visibility is likely to deteriorate

Admin .usually when you descend your oat outside air temperature is increasing but when you descend into an inversion layer your oat will start to decrease instead of increasing you would expect an increase in thrust exemple 269 Thrust most likely will increase and visibility is likely to deteriorate.

Question 165-3 : The presence of ice pellets at the surface is the evidence that ?

Temperatures are above freezing at some higher altitudes

exemple 273 Temperatures are above freezing at some higher altitudes.

Question 165-4 : Mark the correct statement concerning lightning discharge ?

While flying through air that is electrically charged the aircraft is likely to become a charge carrier itself and can initiate a lightning discharge

exemple 277 While flying through air that is electrically charged the aircraft is likely to become a charge carrier itself and can initiate a lightning discharge.

Question 165-5 : Most tornadoes have a life span that lasts for ?

A few minutes up to 30 minutes

exemple 281 A few minutes up to 30 minutes.

Question 165-6 : During an ils approach on rwy 33 a northwesterly wind is blowing parallel to the runway its speed is increasing rapidly with height while its change in direction is negligible .what has the pilot to be aware of with respect to wind shear and glide path no autopilot engaged ?

Without the pilot's intervention the aircraft is likely to fly below the designated glide path with increasing deviation from it

Admin .the wind is blowing parallel to the runway it's a headwind .you are descending into an increasing headwind wind shear and with constant aispeed and angle of attack this will give a decreasing ground speed you normally have to decrease the rate of descent in order to maintain the glide slope but without intervention you will maintain a rate of descent for a higher ground speed this will result to fly below the designated glide path with increasing deviation from it since the question states is increasing rapidly with height .take care not to understand an increase of wind with an increase of altitude we are talking about wind shear not a standard atmosphere wind exemple 285 Without the pilot's intervention, the aircraft is likely to fly below the designated glide path with increasing deviation from it.

Question 165-7 : Mark the correct statement concerning the flight through an inversion caused by subsidence ?

During climb the reduced air density above the inversion layer will cause a certain decrease in the aircraft performance ie lift and thrust and the pilot will experience a sudden improvement of visibility

Rencag .temperature falls above the inversion layer so density should increase isn't it ..the question states flight through an inversion not above the inversion layer .below the inversion layer air temperature decreases with height inside the inversion air temperature increases with height exemple 289 During climb, the reduced air density above the inversion layer will cause a certain decrease in the aircraft performance (ie: lift and thrust) and the pilot will experience a sudden improvement of visibility.

Question 165-8 : Clouds will mainly consist of supercooled water droplets when the temperature is ?

Between 0°c and 15°c

exemple 293 Between 0°c and -15°c.

Question 165-9 : A stormscope is ?

An instrument on board an aircraft to detect electrical discharges

A stormscope is basically a lightning detector exemple 297 An instrument on board an aircraft to detect electrical discharges.

Question 165-10 : Most tornadoes have a speed of movement that usually ranges from ?

20 to 40 knots

Take care the question is about the tornadoes forward motion not the wind speed inside the tornadoes .tornado paths range from 100 m to 1 5 km wide and are rarely more than 12 nm long .they can last from several seconds to more than an hour however most don't exceed 10 minutes .most tornadoes travel with an average speed of 30 kt but the speed has been observed to range from almost no motion to 60 kt exemple 301 20 to 40 knots.

Question 165-11 : Which of the following statements regarding the development of valley inversions is correct ?

Valley inversions often are a result of radiation cooling in combination with gravity both affecting the air at the surface of a mountain slope

Over night cool dense air as a result of radiation cooling will descend by gravity along the mountain slopes into the basin and lead to the development of a valley inversion exemple 305 Valley inversions often are a result of radiation cooling in combination with gravity, both affecting the air at the surface of a mountain slope.

Question 165-12 : During the preparation for approach to zurich airport 1416 ft/amsl a pilot hears the following message on the atis 'inversion warning inversion of 12°c between 1900 ft and 2300 ft altitude' .this message indicates that the pilot should be prepared ?

For wind shear just above the inversion

Low level temperature inversion can be a safety hazard it can be a significant factor in affecting take off or landing performance information regarding low level temperature inversions should be provided as soon as possible . 646.an inversion will promote vertical wind shear exemple 309 For wind shear just above the inversion.

Question 165-13 : When flying in mountainous terrain and assuming isa temperatures and strong winds which of the following is correct ?

In case of venturi effect the actual altitude of the aircraft is lower than the indicated altitude

With strong winds the mountainous terrain will acts like a wing .you will have a reduced pressure over a hill it acts like a cambered aerofoil in case of venturi effect .in this area of reduced pressure the altimeter will over read it sence a lower pressure it reads a higher altitude than it should . 641.venturi effect static pressure decreased compared to original exemple 313 In case of venturi effect, the actual altitude of the aircraft is lower than the indicated altitude.

Question 165-14 : What degree of aircraft icing is determined by the following icao description .'conditions in which change of heading and/or altitude may be considered desirable' ?

Moderate

exemple 317 Moderate.

Question 165-15 : Two aircraft are flying simultaneously in level flight at different flight levels on opposite tracks overhead a given position .aircraft a flying at fl 070 experiences a 30 kt headwind .aircraft b flying at fl 060 experiences a 20 kt headwind.none of the aircraft experiences cross wind this wind ?

Vertical wind shear only

Admin . 643.vertical shear is the change of winds with height exemple 321 Vertical wind shear only.

Question 165-16 : What is the best way in dealing with thunderstorms associated with a cold front ?

Avoidance of embedded cbs by using airborne weather radar

Ecqb01 june 2013 exemple 325 Avoidance of embedded cbs by using airborne weather radar.

Question 165-17 : Orographic thunderstorms may occur ?

At any time during day and night

Ecqb01 june 2013 exemple 329 At any time during day and night.

Question 165-18 : During flight the headwind increases suddenly due to wind shear what initial effect does that have on true airspeed ?

There will be a sudden temporary increase in true air speed

Easa 2014 exemple 333 There will be a sudden temporary increase in true air speed.

Question 165-19 : During an ils approach on rwy 33 a northwesterly wind is blowing parallel to the runway its speed is decreasing rapidly with height while its change in direction is negligible what has the pilot to be aware of with respect to wind shear and glide path no autopilot engaged ?

Without the pilot's intervention the aircraft is likely to fly above the designated glide path with increasing deviation from it

Admin .take care this question is the opposite to an other one which states its speed is increasing rapidly with height .the wind is blowing parallel to the runway it's a headwind .you are descending into a decreasing headwind wind shear and with constant aispeed and angle of attack this will give an increasing ground speed you normally have to increase the rate of descent in order to maintain the glide slope but without intervention you will maintain a rate of descent for a lower ground speed this will result to fly above the designated glide path with increasing deviation from it since the question states is decreasing rapidly with height exemple 337 Without the pilot's intervention, the aircraft is likely to fly above the designated glide path with increasing deviation from it.

Question 165-20 : Which of the following statements regarding an aircraft being struck by lightning is true ?

The flight crew might have temporary difficulties in determining the current attitude of flight

exemple 341 The flight crew might have temporary difficulties in determining the current attitude of flight.

Question 165-21 : For this question use annex 050 047 .on which of these routes would you not need to worry about icing at fl 180 . 393 ?

Bordeaux zurich

Ecqb03 july 2016 exemple 345 Bordeaux - zurich

Question 165-22 : Compared to a microburst a macroburst ?

Affects a larger area

exemple 349 Affects a larger area.

Question 165-23 : An aircraft in straight and level flight may suddenly experience clear air turbulence cat which may ?

Cause abrupt changes in attitude and/or height resulting in injuries to passengers and crew aircraft may be out of control for short period

Ecqb03 july 2016 exemple 353 Cause abrupt changes in attitude and/or height resulting in injuries to passengers and crew, aircraft may be out of control for short period.

Question 165-24 : Which of the following statements is correct concerning rotors below the crest of a mountain wave ?

The wind direction at the lower side of the rotors is opposite to the prevailing wind direction

Ecqb03 august 2016 exemple 357 The wind direction at the lower side of the rotors is opposite to the prevailing wind direction.

Question 165-25 : Which of these statements about turbulence are correct or incorrect .1 above the tropopause the risk of cat is zero .2 convective turbulence is always indicated by convective clouds ?

1 and 2 are incorrect

Ecqb03 august 2016 exemple 361 1 and 2 are incorrect.

Question 165-26 : If a thunderstorm cb 10 nm ahead is assessed as still being in the mature phase what should a pilot of a light aircraft do ?

He should change heading to circumnavigate the storm

Ecqb03 august 2016 exemple 365 He should change heading to circumnavigate the storm.

Question 165-27 : Which of these statements about turbulence are correct or incorrect .1 severe cat may be expected in the core of a jet stream.2 at 500 ft/agl mechanical turbulence does occur more often than at 5000 ft/agl ?

1 is not correct 2 is correct

Ecqb03 august 2016 exemple 369 1 is not correct, 2 is correct.

Question 165-28 : Check the correctness of the following statements .1 outside clouds no severe aircraft icing can occur.2 hoar frost consists of ice crystals formed on a surface by sublimation ?

1 is correct 2 is correct

Ecqb03 august 2016 exemple 373 1) is correct 2) is correct.

Question 165-29 : On which route of flight would you expect no icing at fl 180 . 401 ?

Hamburg stockholm

Admin .the flight from hamburg to stockholm will be out of cloud and out of area where icing is reported . 458 exemple 377 Hamburg-stockholm.

Question 165-30 : If you are flying from zurich to london at fl 220 what conditions can you expect at cruising altitude . 402 ?

Scattered thunderstorms

Admin .you have embedded cbs from below fl100 chart goes from fl100 to fl450 up to fl280 .icing and turbulence only go up to fl150 exemple 381 Scattered thunderstorms.

Question 165-31 : Which route is free of turbulence at fl 340 . 404 ?

Shannon hamburg

Admin . 459.this is the only route that do not cross cat aera n°1 exemple 385 Shannon-hamburg

Question 165-32 : What is the lowest flight level that is forecast to be subject to clear air turbulence on the route from valencia to charleston . 405 ?

Fl 250

exemple 389 Fl 250.

Question 165-33 : What is the greatest intensity of turbulence i and icing ii that can be expected on the route from valencia to charleston at fl 330 . 407 ?

I severe ii severe

exemple 393 (i) severe, (ii) severe.

Question 165-34 : According to icao which symbol indicates danger to an aircraft in flight . 420 ?

1

Admin .icao annex 3 meteorological service for international air navigation . 547 exemple 397 1)

Question 165-35 : What is the relationship between visibility and rvr in homogeneous fog ?

The visibility is generally less than the rvr

Admin .the methods for measuring rvr and prevailing visibility are quite different rvr is measured in a specific direction usually using transmissiometers while the prevailing visibility will be the average and if less than 1500 m the minimum value in a specific direction this means that there can be no direct comparison and rvr is likely to be the same as or greater than the lowest reported value of prevailing visibility exemple 401 The visibility is generally less than the rvr.

Question 165-36 : When is the rvr reported at most airports ?

When the visibility decreases below 1500 m

Admin .annex 3 meteorological service for international air navigation .rvr is reported when visibility is less than 1500 m exemple 405 When the visibility decreases below 1500 m.

Question 165-37 : How is the direction and speed of upper winds described in forecasts ?

The direction is relative to true north and the speed is in knots

exemple 409 The direction is relative to true north and the speed is in knots.

Question 165-38 : What positions are connected by contour lines on a weather chart ?

Positions with the same height in a chart of constant pressure

exemple 413 Positions with the same height in a chart of constant pressure.

Question 165-39 : In which meteorological forecast chart is information about cat regions found ?

Significant weather chart

Admin . 522.cat areas on a significant weather chart swc .example for cat n°2 you will encountered moderate turbulence between fl220 to 400 exemple 417 Significant weather chart.

Question 165-40 : The isobars drawn on a surface weather chart represent lines of equal pressure ?

Reduced to sea level

exemple 421 Reduced to sea level.


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