2 Instru

4202. A ceiling is defined as the height of the. A— highest layer of clouds or obscuring phenomena aloft that covers over 6/10 of the sky. B— lowest layer of clouds that contributed to the overall overcast. C— lowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast.

4196. The station originating the following weather report has a field elevation of 1,300 feet MSL. From the bottom of the overcast cloud layer, what is its thickness? (tops of OVC are reported at 3800 feet) SPECI KOKC 2228Z 28024G36KT 3/4SM BKN008 OVC020 28/23 A3000. A— 500 feet. B— 1,700 feet. C— 2,500 feet.

4203. The reporting station originating this Aviation Routine Weather Report has a field elevation of 620 feet. If the reported sky cover is one continuous layer, what is its thickness? (tops of OVC are reported at 6500 feet) METAR KMDW 121856Z AUTO 32005KT 1 1/2SM +RABR OVC007 17/16 A2980. A— 5,180 feet. B— 5,800 feet. C— 5,880 feet.

4205. What is meant by the entry in the remarks section of METAR surface report for KBNA? METAR KBNA 211250Z 33018KT 290V260 1/2SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RAE42SNB42. A— The wind is variable from 290° to 360. B— Heavy blowing snow and fog on runway 31. C— Rain ended 42 past the hour, snow began 42 past the hour.

4182. What significant sky condition is reported in this METAR observation? METAR KBNA 1250Z 33018KT 290V360 1/2SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RERAE42SNB42. A— Runway 31 ceiling is 2700 feet. B— Sky is obscured with vertical visibility of 800 feet. C— Measured ceiling is 300 feet overcast.

4170. The body of a Terminal Aerodrome Forecast (TAF) covers a geographical proximity within a. A— 5 nautical mile radius of the center of an airport. B— 5 statute mile radius from the center of an airport runway complex. C— 5 to 10 statute mile radius from the center of an airport runway complex.

4176. Which primary source should be used to obtain forecast weather information at your destination for the planned ETA?. A— Area Forecast. B— Radar Summary and Weather Depiction Charts. C— Terminal Aerodrome Forecast (TAF).

4177. A “VRB” wind entry in a Terminal Aerodrome Forecast (TAF) will be indicated when the wind is. A— 3 knots or less. B— 6 knots or less. C— 9 knots or less.

4178. When the visibility is greater than 6 SM on a TAF it is expressed as. A— 6PSM. B— P6SM. C— 6SMP.

4180. What is the forecast wind at 1800Z in the following TAF? KMEM 091740Z 1818 00000KT 1/2SM RAFG OVC005=. A— Calm. B— Unknown. C— Not recorded.

4228. From which primary source should you obtain information regarding the weather expected to exist at your destination at your estimated time of arrival?. A— Weather Depiction Chart. B— Radar Summary and Weather Depiction Chart. C— Terminal Aerodrome Forecast.

4204. What is the wind shear forecast in the following TAF? TAF KCVG 231051Z 231212 12012KT 4SM -RA BR OVC008 WS005/27050KT TEMPO 1719 1/2SM -RA FG FM1930 09012KT 1SM -DZ BR VV003 BECMG 2021 5SM HZ=. A— 5 feet AGL from 270° at 50 KT. B— 50 feet AGL from 270° at 50 KT. C— 500 feet AGL from 270° at 50 KT.

4179. “WND” in the categorical outlook in the Aviation Area Forecast means that the wind during that period is forecast to be. A— sustained surface wind speed of 6 knots or greater. B— sustained surface wind speed of 15 knots or greater. C— sustained surface wind speed of 20 knots or greater.

4201. Area forecasts generally include a forecast period of 18 hours and cover a geographical. A— terminal area. B— area less than 3000 square miles. C— area the size of several states.

4092. Which is true regarding the use of airborne weather-avoidance radar for the recognition of certain weather conditions?. A— The radarscope provides no assurance of avoiding instrument weather conditions. B— The avoidance of hail is assured when flying between and just clear of the most intense echoes. C— The clear area between intense echoes indicates that visual sighting of storms can be maintained when flying between the echoes.

4468. Pilots on IFR flights seeking ATC in-flight weather avoidance assistance should keep in mind that. A— ATC radar limitations and, frequency congestion may limit the controllers capability to provide this service. B— circumnavigating severe weather can only be accommodated in the en route areas away from terminals because of congestion. C— ATC Narrow Band Radar does not provide the controller with weather intensity capability.

4468-1. If you encounter in-flight icing and ATC asks you to report your conditions, what are the official reportable icing values that you are expected to use?. A— Light, moderate, severe, extreme. B— Trace, light, moderate, severe. C— Few, light, moderate, severe.

4198. Which response most closely interprets the following PIREP? UA/OV OKC 063064/TM 1522/FL080/TP C172/TA M04/ WV 245040/TB LGT/RM IN CLR. A— 64 nautical miles on the 63 degree radial from Oklahoma City VOR at 1522 UTC, flight level 8,000 ft. Type of aircraft is a Cessna 172. B— Reported by a Cessna 172, turbulence and light rime icing in climb to 8,000 ft. C— 63 nautical miles on the 64 degree radial from Oklahoma City, thunderstorm and light rain at 1522 UTC.

4220. Interpret this PIREP. MRB UA/OV MRB/TM1430/FL060/TPC182/SK BKN BL/WX RA/TB MDT. A— Ceiling 6,000 feet intermittently below moderate thundershowers; turbulence increasing westward. B— FL 60,000, intermittently below clouds; moderate rain, turbulence increasing with the wind. C— At 6,000 feet; between layers; moderate turbulence; moderate rain.

4191. Which values are used for winds aloft forecasts?. A— Magnetic direction and knots. B— Magnetic direction and MPH. C— True direction and knots.

4172. What wind direction and speed is represented by the entry 9900+00 for 9,000 feet, on an Winds and Temperatures Aloft Forecast (FD)?. A— Light and variable; less than 5 knots. B— Vortex winds exceeding 200 knots. C— Light and variable; less than 10 knots.

4188. When is the temperature at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)?. A— When the temperature is standard for that altitude. B— For the 3,000-foot altitude (level) or when the level is within 2,500 feet of station elevation. C— Only when the winds are omitted for that altitude (level).

4189. When is the wind-group at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)? When the wind . A— is less than 5 knots. B— is less than 10 knots. C— at the altitude is within 1,500 feet of the station elevation.

4190. Decode the excerpt from the Winds and Temperature Aloft Forecast (FD) for OKC at 39,000 feet. FT 3000 6000 39000 OKC 830558. A— Wind 130° at 50 knots, temperature -58°C. B— Wind 330° at 105 knots, temperature -58°C. C— Wind 330° at 205 knots, temperature -58°C.

4192. (Refer to Figure 2.) What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over PSB at FL 270?. A— 260° magnetic at 93 knots; ISA +7°C. B— 280° true at 113 knots; ISA +3°C. C— 255° true at 93 knots; ISA +6°C.

4193. (Refer to Figure 2.) What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over ALB at FL 270?. A— 270° magnetic at 97 knots; ISA -4°C. B— 260° true at 110 knots; ISA +5°C. C— 275° true at 97 knots; ISA +4°C.

4194. (Refer to Figure 2.) What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over EMI at FL 270?. A— 265° true; 100 knots; ISA +3°C. B— 270° true; 110 knots; ISA +5°C. C— 260° magnetic; 100 knots; ISA -5°C.

4199. A station is forecasting wind and temperature aloft at FL 390 to be 300° at 200 knots; temperature ‑54° C. How would this data be encoded in the FD?. A— 300054. B— 809954. C— 309954.

4246. (Refer to Figure 12.) What is the approximate wind direction and velocity at 34,000 feet (see arrow C)?. A— 290°/50 knots. B— 330°/50 knots. C— 090°/48 knots.

4247. (Refer to Figure 12.) The wind direction and velocity on the Observed Winds Aloft Chart (see arrow A) is indicated from the. A— northeast at 35 knots. B— northwest at 47 knots. C— southwest at 35 knots.

4249. (Refer to Figure 12.) What is the approximate wind direction and velocity at CVG at 34,000 feet (see arrow A)?. A— 040°/35 knots. B— 097°/40 knots. C— 230°/35 knots.

4250. (Refer to Figure 12, arrow B.) What is the approximate wind direction and velocity at BOI (see arrow B)?. A— 270°/55 knots. B— 250°/95 knots. C— 080°/95 knots.

4186. When are severe weather watch bulletins (WW) issued?. A— Every 12 hours as required. B— Every 24 hours as required. C— Unscheduled and issued as required.

4181. SIGMETs are issued as a warning of weather conditions potentially hazardous. A— particularly to light aircraft. B— to all aircraft. C— only to light aircraft operations.

4183. Which meteorological condition is issued in the form of a SIGMET (WS)?. A— Widespread sand or dust storms affecting at least 3,000 square miles or an area deemed to have a significant effect on the safety of aircraft operations. B— Moderate icing. C— Sustained winds of 30 knots or greater at the surface.

4183-1. SIGMETs are unscheduled weather products that are valid for. A— a period not to exceed 4 hours, but may be reissued for additional 4 hour periods. B— 2 to 12 hours, depending on the severity of the weather. C— 6 hours, unless associated with hurricanes or tropical cyclones.

4184. A pilot planning to depart at 1100Z on an IFR flight is particularly concerned about the hazard of icing. What sources reflect the most accurate information on icing conditions (current and forecast) at the time of departure?. A— Low-Level Significant Weather Prognostic Chart, and the Area Forecast. B— The Area Forecast, and the Freezing Level Chart. C— Pilot weather reports (PIREPs), AIRMETs, and SIGMETs.

4241. The Hazardous Inflight Weather Advisory Service (HIWAS) is a continuous broadcast over selected VORs of. A— SIGMETs, CONVECTIVE SIGMETs, AIRMETs, Severe Weather Forecasts Alerts (AWW), and Center Weather Advisories. B— SIGMETs, CONVECTIVE SIGMETs, AIRMETs, Wind Shear Advisories, and Severe Weather Forecast Alerts (AWW). C— Wind Shear Advisories, Radar Weather Reports, SIGMETs, CONVECTIVE SIGMETs, AIRMETs, and Center Weather Advisories (CWA).

4187. What is the maximum forecast period for AIRMETs?. A— Two hours. B— Four hours. C— Six hours.

4467. AIRMETs are issued on a scheduled basis every. A— 15 minutes after the hour only. B— 15 minutes until the AIRMET is canceled. C— six hours.

4504. On what frequency should you obtain En Route Flight Advisory Service below FL 180?. A— 122.1T/112.8R. B— 123.6. C— 122.0.

4215. What information is provided by a Convective Outlook (AC)?. A— It describes areas of probable severe icing and severe or extreme turbulence during the next 24 hours. B— It provides prospects of both general and severe thunderstorm activity during the following 24 hours. C— It indicates areas of probable convective turbulence and the extent of instability in the upper atmosphere (above 500 MB).

4226. Which weather forecast describes prospects for an area coverage of both severe and general thunderstorms during the following 24 hours?. A— Terminal Aerodrome Forecast. B— Convective Outlook. C— Radar Summary Chart.

4175. What does a Convective Outlook (AC) describe for a following 24 hour period?. A— General thunderstorm activity. B— A severe weather watch bulletin. C— When forecast conditions are expected to continue beyond the valid period.

4197. (Refer to Figure 9.) The Severe Weather Outlook Chart depicts. A— areas of probable severe thunderstorms by the use of single hatched areas on the chart. B— areas of forecast, severe or extreme turbulence, and areas of severe icing for the next 24 hours. C— areas of general thunderstorm activity (excluding severe) by the use of hatching on the chart.

4239. (Refer to Figure 9.) The Severe Weather Outlook Chart, which is used primarily for advance planning, provides what information? . A— An 18-hour categorical outlook with a 48-hour valid time for severe weather watch, thunderstorm lines, and of expected tornado activity. B— A preliminary 12-hour outlook for severe thunderstorm activity and probable convective turbulence. C— A 24-hour severe weather outlook for possible thunderstorm activity.

4240. (Refer to Figure 9.) Using the DAY 2 CONVECTIVE OUTLOOK, what type of thunderstorms, if any, may be encountered on a flight from Montana to central California?. A— Moderate risk area, surrounded by a slight risk area, of possible severe turbulence. B— General. C— None.

4248. (Refer to Figure 9.) What type of thunderstorm activity is expected over Montana on April 4th at 0800Z?. A— None. B— A slight risk of severe thunderstorms. C— General.

4209. The Surface Analysis Chart depicts. A— actual pressure systems, frontal locations, cloud tops, and precipitation at the time shown on the chart. B— frontal locations and expected movement, pressure centers, cloud coverage, and obstructions to vision at the time of chart transmission. C— actual frontal positions, pressure patterns, temperature, dew point, wind, weather, and obstructions to vision at the valid time of the chart.

4206. (Refer to Figure 4.) What is the meaning of a bracket (]) plotted to the right of the station circle on a weather depiction chart?. A— The station represents the en route conditions within a 50 mile radius. B— The station is an automated observation location. C— The station gives local overview of flying conditions for a six hour period.

4207. (Refer to Figure 4.) The Weather Depiction Chart indicates the heaviest precipitation is occurring in. A— north central Florida. B— north central Minnesota. C— central South Dakota.

4208. (Refer to Figure 4.) The Weather Depiction Chart in the area of northwestern Wyoming, indicates. A— overcast with scattered rain showers. B— 1,000-foot ceilings and visibility 3 miles or more. C— 500-foot ceilings and continuous rain, less than 3 miles visibility.

4174. What important information is provided by the Radar Summary Chart that is not shown on other weather charts?. A— Lines and cells of hazardous thunderstorms. B— Types of precipitation. C— Areas of cloud cover and icing levels within the clouds.

4230. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow A on the Radar Summary Chart?. A— Moderate to strong echoes; echo tops 30,000 feet MSL; line movement toward the northwest. B— Weak to moderate echoes; average echo bases 30,000 feet MSL; cell movement toward the southeast; rain showers with thunder. C— Strong to very strong echoes; echo tops 30,000 feet MSL; thunderstorms and rain showers.

4231. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow D on the Radar Summary Chart?. A— Echo tops 4,100 feet MSL, strong to very strong echoes within the smallest contour, and area movement toward the northeast at 50 knots. B— Intense to extreme echoes within the smallest contour, echo tops 29,000 feet MSL, and cell movement toward the northeast at 50 knots. C— Strong to very strong echoes within the smallest contour, echo bases 29,000 feet MSL, and cell in northeast Nebraska moving northeast at 50 knots.

4232. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow C on the Radar Summary Chart?. A— Average echo bases 2,800 feet MSL, thundershowers, and intense to extreme echo intensity. B— Cell movement toward the northwest at 20 knots, intense echoes, and echo bases 28,000 feet MSL. C— Area movement toward the northeast strong to very strong echoes, and echo tops 28,000 feet MSL.

4233. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow B on the Radar Summary Chart?. A— Weak echoes, heavy rain showers, area movement toward the southeast. B— Weak to moderate echoes, rain showers increasing in intensity. C— Strong echoes, moderate rain showers, no cell movement.

4234. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow E on the Radar Summary Chart?. A— Highest echo tops 30,000 feet MSL, weak to moderate echoes, thunderstorms and rain showers, and cell movement toward northwest at 15 knots. B— Echo bases 29,000 to 30,000 feet MSL, strong echoes, rain showers increasing in intensity, and area movement toward northwest at 15 knots. C— Thundershowers decreasing in intensity; area movement toward northwest at 15 knots; echo bases 30,000 feet MSL.

4236. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow G on the Radar Summary Chart?. A— Echo bases 10,000 feet MSL; cell movement toward northeast at 15 knots; weak to moderate echoes; rain. B— Area movement toward northeast at 15 knots; rain decreasing in intensity; echo bases 1,000 feet MSL; strong echoes. C— Strong to very strong echoes; area movement toward northeast at 15 knots; echo tops 10,000 feet MSL; light rain.

4237. (Refer to Figure 8.) What weather conditions are depicted in the area indicated by arrow F on the Radar Summary Chart?. A— Line of echoes; thunderstorms; highest echo tops 45,000 feet MSL; no line movement indicated. B— Echo bases vary from 15,000 feet to 46,000 feet MSL; thunderstorms increasing in intensity; line of echoes moving rapidly toward the north. C— Line of severe thunderstorms moving from south to north; echo bases vary from 4,400 feet to 4,600 feet MSL; extreme echoes.

4235. For most effective use of the Radar Summary Chart during preflight planning, a pilot should. A— consult the chart to determine more accurate measurements of freezing levels, cloud cover, and wind conditions between reporting stations. B— know the chart displays precipitation only; it does not display clouds, fog, fronts, or other boundaries. C— utilize the chart as the only source of information regarding storms and hazardous conditions existing between reporting stations.

4195. What flight planning information can a pilot derive from constant pressure charts?. A— Clear air turbulence and icing conditions. B— Levels of widespread cloud coverage. C— Winds and temperatures aloft.

4173. What conclusion(s) can be drawn from a 500-millibar Constant Pressure Chart for a planned flight at FL 180?. A— Winds aloft at FL 180 generally flow across the height contours. B— Observed temperature, wind, and temperature/ dewpoint spread along the proposed route can be approximated. C— Upper highs, lows, troughs, and ridges will be depicted by the use of lines of equal pressure.

4211. The Low-Level Significant Weather Prognostic Chart depicts weather conditions. A— that are forecast to exist at a valid time shown on the chart. B— as they existed at the time the chart was prepared. C— that existed at the time shown on the chart which is about 3 hours before the chart is received.

4214. A prognostic chart depicts the conditions. A— existing at the surface during the past 6 hours. B— which presently exist from the 1,000-millibar through the 700-millibar level. C— forecast to exist at a specific time in the future.

4212. Which meteorological conditions are depicted by a prognostic chart?. A— Conditions existing at the time of the observation. B— Interpretation of weather conditions for geographical areas between reporting stations. C— Conditions forecast to exist at a specific time shown on the chart.

4213. (Refer to Figure 5.) What is the meaning of the symbol depicted as used on the U.S. Low-Level Significant Weather Prog Chart?. A— Showery precipitation (e.g. rain showers) embedded in an area of continuous rain covering half or more of the area. B— Continuous precipitation (e.g. rain) covering half or more of the area. C— Showery precipitation (e.g. thunderstorms/rain showers) covering half or more of the area.

4216. (Refer to Figure 18, SFC PROG.) A planned low altitude flight from northern Florida to southern Florida at 00Z is likely to encounter. A— intermittent rain or rain showers, moderate turbulence, and freezing temperatures above 8,000 feet. B— showery precipitation, thunderstorms/rain showers covering half or more of the area. C— showery precipitation covering less than half the area, no turbulence below 18,000 feet, and freezing temperatures above 12,000 feet.

4217. (Refer to Figure 18, SFC-400 MB.) The 24-Hour Low Level Significant Weather Prog at 12Z indicates that southwestern West Virginia will likely experience. A— ceilings less than 1,000 feet, visibility less than 3 miles. B— clear sky and visibility greater than 6 miles. C— ceilings 1,000 to 3,000 feet and visibility 3 to 5 miles.

4218. (Refer to Figure 18, SFC-400MB.) The U.S. Low Level Significant Weather Surface Prog Chart at 00Z indicates that northwestern Colorado and eastern Utah can expect. A— moderate or greater turbulence from the surface to FL 240. B— moderate or greater turbulence above FL 240. C— no turbulence is indicated.

4219. (Refer to Figure 18, SFC-PROG.) The chart symbols shown in the Gulf of Mexico at 12Z and extending into AL, GA, SC and northern FL indicate a. A— tropical storm. B— hurricane. C— tornado originating in the Gulf of Mexico.

4221. (Refer to Figure 7.) What weather conditions are depicted within the area indicated by arrow E?. A— Occasional cumulonimbus, 1/8 to 4/8 coverage, bases below 24,000 feet MSL, and tops at 40,000 feet MSL. B— Frequent embedded thunderstorms, less than 1/8 coverage, and tops at FL370. C— Frequent lightning in thunderstorms at FL370.

4222. (Refer to Figure 7.) What weather conditions are depicted within the area indicated by arrow D?. A— Forecast isolated thunderstorms, tops at FL 440, more than 1/8 coverage. B— Existing isolated cumulonimbus clouds, tops above 43,000 feet with less than 1/8 coverage. C— Forecast isolated embedded cumulonimbus clouds with tops at 43,000 feet MSL, and less than 1/8 coverage.

4223. (Refer to Figure 7.) What weather conditions are predicted within the area indicated by arrow C?. A— Light turbulence at FL 370 within the area outlined by dashes. B— Moderate turbulence at 35,000 feet MSL. C— Moderate to severe CAT has been reported at FL 320.

4224. (Refer to Figure 7.) What weather conditions are depicted within the area indicated by arrow B?. A— Light to moderate turbulence at and above 37,000 feet MSL. B— Moderate to severe CAT is forecast to exist at FL 370. C— Moderate turbulence from below 24,000 feet MSL to 37,000 feet MSL.

4243. (Refer to Figure 20.) What is the maximum wind velocity forecast in the jet stream shown on the high level Significant Weather Prognostic Chart over Canada?. A— 80. B— 103. C— 130.

4244. (Refer to Figure 20.) What is the height of the tropopause over Kentucky?. A— FL390. B— FL300 sloping to FL 400 feet MSL. C— FL340.

4242. (Refer to Figure 7.) The symbol on the U.S. HIGHLEVEL SIGNIFICANT WEATHER PROG, indicated by arrow G, represents the. A— wind direction at the tropopause (300°). B— height of the tropopause. C— height of maximum wind shear (30,000 feet).

4245. (Refer to Figure 7.) The area indicated by arrow H indicates. A— light turbulence below 34,000 feet. B— isolated embedded cumulonimbus clouds with bases below FL180 and tops at FL340. C— moderate turbulence at and below 34,000 feet.

4225. (Refer to Figure 7.) What information is indicated by arrow A?. A— The height of the tropopause in meters above sea level. B— The height of the existing layer of CAT. C— The height of the tropopause in hundreds of feet above MSL.

4229. (Refer to Figure 7.) What weather conditions are depicted within the area indicated by arrow F?. A— 1/8 to 4/8 coverage, occasional embedded thunderstorms, maximum tops at 51,000 feet MSL. B— Occasionally embedded cumulonimbus, bases below 24,000 feet with tops to 48,000 feet. C— 2/8 to 6/8 coverage, occasional embedded thunderstorms, tops at FL 540.