High clouds. Which type of icing is hard, heavy, tenacious, and most difficult to break off with deicing equipment? When a high pressure stagnates over an industrial area, during which time of the day would you expect the lowest visibility? The latter effect may alter longitudinal stability and pitch trim requirements. The drain masts involved are those from aircraft galleys or toilet compartments which are normally heated to prevent ice formation but for some reason have not been operating as intended. The resultant ice deposit formed is rough and crystalline and opaque and because of its crystalline structure, it is brittle. If the freezing process is sufficiently slow to allow the water to spread more evenly before freezing, the resultant transparent sheet of ice may be difficult to detect. What is the primary difference between a ceiling caused by an obstruction to vision and one caused by clouds? 18 . Actual frontal positions, pressure patterns, temperature, dew point, wind, weather, and obstructions to vision at the valid time of the chart. 64 nautical miles on the 63° radial from Oklahoma City VOR at 1522 UTC, flight level 8,000 ft. 12 . Fog is usually prevalent in industrial areas because of. Which of these conditions might produce fog? B) Clouds with extensive vertical development. On a warm day when flying at a lower altitude, a pilot might experience turbulence associated with ____________ as they transition from flight over a field with a crop growing to flight over a plowed field. 15 . Restricted visibility at or near the surface over large areas usually indicates: 5 . 2 . High clouds. On which chart(s) would you find information on lines and cells of hazardous thunderstorms? 1 . 16 . Which type of clouds are most likely to form when there is a rapid decrease in temperature with an increase in altitude? One of the greatest hazards of thunderstorms is hail, which is a hazard: 11 . An accumulation of frost on the airfoil surface could cause which of the following? If using airborne radar and flying in the vicinity of thunderstorms, what is a good procedure? Size of the water droplets and temperature. Hazards arising from the presence of ice on an airframe include: Ice accretion on critical parts of an airframe unprotected by a normally functioning anti-icing or de-icing system can modify the airflow pattern around airfoil surfaces such as wings and propeller blades leading to loss of lift, increased drag and a shift in the airfoil centre of pressure. 16 . 9 . UA/OV OKC 063064/TM 1522/FL080/TP BE1900/TA M04/WV 245040/TB LGT/RM IN CLR. 3 . 18 . Maximum downdrafts in a microburst encounter may be as strong as: 13 . During a hot summer afternoon along coastal areas, which will most likely form along the shoreline? MRB UA/OV MRB/TM1430/FL060/TPC182/SK BKN BL/WX RA/TB MDT. A 5% to 10% increase in stall speed for airplanes and a loss of lift for helicopters. Some other terms which may be encountered in connection with airframe ice accretion include: "Supercooled large droplets (SLD) are defined as those with a diameter greater than 50 microns” - The World Meteorological Organisation. turbulence. 4 . Which of the following clouds are classified in the "low" family of clouds? Which of the following combinations of weather producing variables would likely result in cumuliform-type clouds, good visibility, rain showers, and possible clear-type icing in clouds? Which condition is most favorable for rapid accumulation of clear ice? 2 . 8 . 10 . When ground speed increases, rate of descent must increase. A prognostic chart depicts the conditions: Forecast to exist at a specific time in the future. What is meant by the entry in the remarks section of METAR surface report for KBNA? 4 . High, middle, low, and those with extensive vertical development. Which clouds have the greatest turbulence? During the cumulus (growth) stage of a thunderstorm, the growth rate of a cloud may exceed: 4 . Ice accretion on an aircraft structure can be distinguished as Rime Icing, Clear/Glaze Icing or a blend of the two referred to as Cloudy or Mixed Icing: Rime ice is formed when small supercooled water droplets freeze rapidly on contact with a sub-zero surface. In these cases, if the angle of attack increases in the presence of an abnormal ice loading either as a result of attempting to maintain a climb with limited power and a relatively high load or, more suddenly, when configuration is changed during the approach to land, a stall and loss of control can result from which recovery may not be possible at low level. 17 . Stratified clouds with little vertical development, The suffix "nimbus" used in naming clouds means a, High, middle, low, and those with extensive vertical development. The operator involved was recommended to implement corrective actions to improve the competence of its crews. Which of the following are forms of precipitation? Temperature-dew point spread is 5 °F (2.8 °C) and decreasing. Temperatures freezing or below and visible liquid moisture. Standing lenticular clouds, in mountainous areas, typically indicate which of the following conditions? 2 . An increase in temperature with altitude is known as an: 12 . It appears white in colour when viewed from a distance - for example from the flight deck when on a wing leading edge. 1 . Which is prevalent with cold frontal or squall line thunderstorms and signifies an extremely turbulent zone? In the northern hemisphere which of the following forces causes winds to apparently turn to the right? On 11 August 1991, an British Aerospace ATP, during climb to flight level (FL) 160 in icing conditions, experienced a significant degradation of performance due to propeller icing accompanied by severe vibration that rendered the electronic flight instruments partially unreadable. Smooth air and poor visibility due to fog, haze, or low clouds. 14 . Which family of clouds is least likely to contribute to structural icing on an aircraft? 13 . (tops of OVC are reported at 3800 feet MSL): SPECI KOKC 2228Z 28024G36KT 3/4SM BKN008 OVC020 28/23 A3000. Which type of fog is formed by the evaporation process? Set power for recommended turbulence penetration airspeed and attempt to maintain a level flight attitude, Conditions which determine the pitch attitude required to maintain level flight are, Airspeed, air density, wing design, and angle of attack, To level off at an airspeed higher than the descent speed, the addition of power should be made, assuming a 500 fpm rate of descent, at approximately, During recoveries from unusual attitudes level flight is attained the instant, The altimeter and airspeed needles stop prior to reversing their direction of movement, What relationship exits between the winds 2,000 feet above the surface and the surface winds, The winds at 2,000 feet tend to parallel the isobars while winds at the surface cross the isobars at an angle toward lower pressure and are weaker.
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