GNAV 03

[GNAV-PT03 #1] How are bearings measured? A) In radians, clockwise from a datum. B) In degrees, counter-clockwise from a datum. C) In degrees, clockwise from a datum. D) In degrees, from a datum, in either direction.

[GNAV-PT03 #2] True North (TN) is defined as: A) The direction measured along the observer’s local meridian of longitude to the True North Pole. B) The direction measured along the observer’s local parallel of longitude to the True North Pole. C) The direction measured along the observer’s local parallel of latitude to the True North Pole. D) The direction measured along the observer’s local meridian of latitude to the True North Pole.

[GNAV-PT03 #3] What is the zero datum for true bearings? A) The observer’s local meridian of longitude, towards the North Pole. B) The observer’s local meridian of longitude, towards the South Pole. C) The direction in which the aircraft is pointing. D) The observer’s local meridian of longitude, away from the North Pole.

[GNAV-PT03 #4] Magnetic North (MN) may be defined as: A) The direction measured along the observer’s local parallel of latitude to the Magnetic North Pole. B) The direction measured along the observer’s local parallel of longitude to the Magnetic North Pole. C) The direction measured along the observer’s local meridian of longitude to the Magnetic North Pole. D) The direction measured along the observer’s local magnetic meridian to the Magnetic North Pole.

[GNAV-PT03 #5] What happens to the position of the Magnetic North Pole? A) It changes over time in a seemingly random manner. B) It remains constant. C) It changes over time in a linear and predictable manner. D) It moves in an elliptical shape on a daily basis but always returns to the same position over time.

[GNAV-PT03 #6] What is magnetic variation? A) The difference in bearing between the directions from an observer to Compass North and Magnetic North. B) The difference in magnetic bearing between the directions from the True and Magnetic North Poles to an observer. C) The difference in true bearing between the directions from the True and Magnetic North Poles to an observer. D) The difference in bearing between the directions from an observer to True North and Magnetic North.

[GNAV-PT03 #7] What is calculated when magnetic variation is applied to a magnetic bearing? A) A grid bearing. B) A compass bearing. C) A drift bearing. D) A true bearing.

[GNAV-PT03 #8] The true bearing being followed by an aircraft is 145°T. Local magnetic variation = 15°W. Compass deviation = 5°E. What is the magnetic bearing? A) 135°M B) 160°M C) 130°M D) 125°M

[GNAV-PT03 #9] The magnetic bearing being followed by an aircraft is 303°M. Local magnetic variation = 8°E. Compass deviation = 2°E. What is the true bearing? A) 295°T B) 311°T C) 309°T D) 313°T

[GNAV-PT03 #10] In the absence of any external influences on the magnetic compass, how will Compass North and Magnetic North differ? A) They will differ by deviation. B) They will differ positively by deviation. C) They will differ negatively by deviation. D) They will be equal.

[GNAV-PT03 #11] By what term is the difference between Compass North and Magnetic North known? A) Variation. B) Convergency. C) Deviation. D) Compensation.

[GNAV-PT03 #12] What process is used to minimise the amount of residual error in a direct reading magnetic compass? A) Compass magnetism reduction. B) Compass alignment swing. C) Compass calibration swing. D) Compass variation swing.

[GNAV-PT03 #13] All bearings are measured in degrees, __________ , from a datum, being the __________ point for measurement of the bearing. A) anti-clockwise; zero B) clockwise; zero C) anti-clockwise; 180 degree D) clockwise; 180 degree

[GNAV-PT03 #14] The difference between the directions from an observer along the local true and magnetic meridians is known as __________ __________. A) magnetic pole B) ecliptic C) magnetic variation D) magnetic deviation

[GNAV-PT03 #15] Magnetic variation is applied to a true bearing to calculate a magnetic bearing: Variation __________ - Magnetic Best Variation __________ - Magnetic Least A) East; West B) East; East C) West; East D) West; West

[GNAV-PT03 #16] __________ __________ - the alignment of a magnetic compass with the local magnetic meridian, at any given point, in the absence of any external influences. A) Compass East B) Compass North C) Compass West D) Compass South

[GNAV-PT03 #17] __________ __________ is the result of external influences on the magnetic compass, causing it to deviate from Magnetic North. A) Compass variation B) Compass deviation C) Compass North D) Compass inclination

[GNAV-PT03 #18] Compass deviation changes with:1- Alignment of Earth and aircraft magnetic fields.2- Aircraft heading.3- __________. A) Deviation B) Declination C) Longitude D) Latitude

[GNAV-PT03 #19] Compass deviation is applied to a magnetic bearing to calculate a compass bearing:Deviation __________ - Compass Best Deviation __________ - Compass Least A) West; East B) East; East C) East; West D) West; West

[GNAV-PT03 #20] Compass deviations are recorded on a compass calibration card, which usually reads: For course __________.Steer __________. A) magnetic; compass. B) magnetic; magnetic. C) compass; compass. D) compass; magnetic.

[GNAV-PT03 #21] Positive Variation and Deviation = __________ (+5° = 5°__________) A) Westerly; W B) Easterly; E C) Easterly; W D) Westerly; E

[GNAV-PT03 #22] Negative Variation and Deviation = __________ (-5° = 5°__________) A) Easterly; E B) Westerly; E C) Easterly; W D) Westerly; W

[GNAV-PT03 #23] __________ - the path over the ground the aircraft follows. A) Heading B) Track C) Direction D) Bearing

[GNAV-PT03 #24] __________ - the direction in which the aircraft is pointing. A) Track B) Heading C) Direction D) Bearing

[GNAV-PT03 #25] Wind Correction Angle - the correction to track to calculate heading (from __________ to __________). A) heading; heading B) heading; track C) track; heading D) track; track

[GNAV-PT03 #26] Drift - the effect of prevailing wind on the flight path of the aircraft (from __________ to __________). A) track; heading B) heading; track C) heading; heading D) track; track

[GNAV-PT03 #27] Application of WCA and DR to track or heading, as appropriate:TRK +/- WCA = __________. A) REL BRG B) TRK C) HDG D) BRG

[GNAV-PT03 #28] Application of WCA and DR to track or heading, as appropriate:HDG +/- DR = __________. A) TRK B) HDG C) BRG D) REL BRG

[GNAV-PT03 #29] An aircraft is on a heading of 100°T, with an island on a relative bearing of 060° from the aircraft. What is the true bearing from the aircraft to the island? A) 280°T B) 040°T C) 340°T D) 160°T

[GNAV-PT03 #30] An aircraft is on a heading of 050°M, with an NDB on a relative bearing of 140° from the aircraft. What is the magnetic bearing from the aircraft to the NDB? A) 090°M B) 140°M C) 010°M D) 190°M

[GNAV-PT03 #31] An aircraft is on a heading of 320°T, with an island on a relative bearing of 010° from the aircraft. What is the true bearing from the island to the aircraft? A) 310°T B) 150°T C) 330°T D) 130°T

[GNAV-PT03 #32] An aircraft is on a heading of 235°M, with an NDB on a relative bearing of 080° from the aircraft. What is the magnetic bearing from the NDB to the aircraft? A) 135°M B) 155°M C) 315°M D) 335°M

[GNAV-PT03 #33] An aircraft is on a heading of 085°M, with an island on a relative bearing of 110° from the aircraft. Magnetic variation = 15°W. What is the true bearing from the aircraft to the island? A) 360°T B) 180°T C) 140°T D) 320°T

[GNAV-PT03 #34] An aircraft is on a heading of 205°M, with an island on a relative bearing of 270° from the aircraft. Magnetic variation = 45°E. What is the true bearing from the island to the aircraft? A) 160°T B) 070°T C) 340°T D) 250°T

[GNAV-PT03 #35] An aircraft’s EFIS Navigation Display shows the aircraft to be on a heading of 177°M, with an island 30° right of the centreline. Magnetic variation = 9°W. What is the true bearing from the island to the aircraft? A) 036°T B) 216°T C) 198°T D) 018°T

[GNAV-PT03 #36] An aircraft’s EFIS Navigation Display shows the aircraft to be on a heading of 271°M, with an island 45° right of the centreline. Magnetic variation = 26°E. What is the true bearing from the island to the aircraft? A) 342°T B) 110°T C) 162°T D) 290°T

[GNAV-PT03 #37] An aircraft’s EFIS Navigation Display shows the aircraft to be on a heading of 303°M, with an island 30° left of the centreline. Magnetic variation = 12°E. What is the true bearing from the island to the aircraft? A) 141°T B) 321°T C) 105°T D) 285°T

[GNAV-PT03 #38] An aircraft’s EFIS Navigation Display shows the aircraft to be on a heading of 008°M, with an island 45° left of the centreline. Magnetic variation = 22°E. What is the true bearing from the island to the aircraft? A) 345°T B) 299°T C) 119°T D) 165°T

[GNAV-PT03 #39] An aircraft is on a heading of 315°M, with an NDB on a relative bearing of 120° from the aircraft? Magnetic variation at the aircraft = 10°W and at the NDB = 20°W. What is the true bearing from the NDB to the aircraft? A) 265°T B) 245°T C) 045°T D) 225°T

[GNAV-PT03 #40] An aircraft is on a heading of 309°M, with an NDB on a relative bearing of 320° from the aircraft? Magnetic variation at the aircraft = 35°W and at the NDB = 40°W. What is the true bearing from the NDB to the aircraft? A) 049°T B) 234°T C) 054°T D) 059°T

[GNAV-PT03 #41] An aircraft is on a heading of 033°M, and a land feature is visible on a relative bearing of 090° from the aircraft. Magnetic variation at the aircraft = 5°W and at the land feature = 3°W. What is the true bearing from the land feature to the aircraft? A) 300°T B) 308°T C) 128°T D) 298°T

[GNAV-PT03 #42] An aircraft is on a heading of 212°M, and a land feature is visible 60° left of the aircraft’s nose. Magnetic variation at the aircraft = 14°E and at the land feature = 11°E. What is the true bearing of the aircraft from the land feature? A) 343°T B) 318°T C) 346°T D) 163°T

[GNAV-PT03 #43] An aircraft is on a heading of 353°M, and a land feature is visible 45° left of the aircraft’s nose. Magnetic variation at the aircraft = 22°E and at the land feature = 20°E. What is the true bearing of the aircraft from the land feature? A) 148°T B) 106°T C) 150°T D) 330°T

[GNAV-PT03 #44] Relative bearings are measured in:__________. A) Degrees True B) Degrees C) Degrees Compass D) Degrees Magnetic

[GNAV-PT03 #45] Relative bearings are measured in a :__________ direction. A) Horizontal B) Anti-clockwise C) Clockwise D) Vertical

[GNAV-PT03 #46] To perform relative bearing calculations:__________ + Relative Bearing = Bearing __________. A) Heading; TO B) Relative Bearing; TO C) Relative Bearing; FROM D) Heading; FROM

[GNAV-PT03 #47] To perform relative bearing calculations:HDG (°M) + __________ = BRG TO (°__________) A) Heading; Magnetic B) Heading; True C) Relative Bearing; True D) Relative Bearing; Magnetic

[GNAV-PT03 #48] To perform relative bearing calculations:HDG (°T) + __________ = BRG TO (°__________) A) Heading; True B) Heading; Magnetic C) Relative Bearing; True D) Relative Bearing; Magnetic

[GNAV-PT03 #49] Bearing TO +/- 180° = Bearing __________. A) MAGNETIC B) RELATIVE C) FROM D) TO

[GNAV-PT03 #50] The name given to the largest circle that can be drawn on the surface of a sphere is a __________. A) great circle B) Vertex C) small circle D) North Pole

[GNAV-PT03 #51] Which of the following is not a characteristic of a great circle? A) Forms a straight line between any 2 positions on the Earth. B) Forms the shortest distance between any 2 positions on the Earth. C) Has its plane passing through the centre of the Earth. D) Forms a diameter of the Earth.

[GNAV-PT03 #52] A circle which does not have its plane passing through the centre of the earth is known as a __________. A) great circle B) Vertex C) small circle D) North Pole

[GNAV-PT03 #53] Which of the following is not a great circle? A) The Greenwich Meridian plus its anti-meridian. B) The Equator. C) N/S00° D) N/S45°

[GNAV-PT03 #54] Which of the following is not a small circle? A) The Equator. B) S45° C) S60° D) N30°

[GNAV-PT03 #55] Which of the following is an example of a great circle? A) N60° B) The Greenwich Meridian plus its anti-meridian. C) S45° D) W015° + E155°

[GNAV-PT03 #56] Which of the following is an example of a small circle? A) The Greenwich Meridian plus its anti-meridian. B) Any meridian of longitude. C) Any parallel of latitude, except the Equator. D) The Equator.

[GNAV-PT03 #57] What is the westerly bearing of a track at the vertex. A) 180°T B) 270°T C) 090°T D) 000°T

[GNAV-PT03 #58] A straight line track is drawn from N30° W020° to N30° W028°. What is the longitude of the vertex? A) W022°00’ B) W048°00’ C) W008°00’ D) W024°00’

[GNAV-PT03 #59] A straight line track is drawn from N30° W020° to N30° W028°. What is the latitude of the vertex? A) N30°00’ B) N29°53’ C) N30°07’ D) N29°46’

[GNAV-PT03 #60] A great circle track crosses the Equator at E050° on a bearing of 040°T. What are the coordinates of the highest point reached? A) N50°00’ W040°00’ B) S50°00’ W320°00’ C) N50°00’ E140°00’ D) N40°00’ E140°00’

[GNAV-PT03 #61] A great circle track crosses the Equator at W160° on a bearing of 030°T. What are the coordinates of the highest point reached? A) N60°00’ W070°00’ B) S60°00’ E250°00’ C) N60°00’ E110°00’ D) S60°00’ W070°00’

[GNAV-PT03 #62] A great circle track crosses the Equator at E030° on a bearing of 120°T. What are the coordinates of the highest point reached? A) N30°00’ E120°00’ B) S30°00’ E120°00’ C) S30°00’ E060°00’ D) S30°00’ W120°00’

[GNAV-PT03 #63] A great circle track crosses the Equator at W025° on a bearing of 315°T. What are the coordinates of the highest northerly point reached? A) N45°00’ E065°00’ B) N45°00’ W115°00’ C) S45°00’ W115°00’ D) S45°00’ E065°00’

[GNAV-PT03 #64] A great circle track crosses the Equator at W010° on a bearing of 203½°T. At which longitudes will the track line reach the Polar Circles? A) W080°00’ and E100°00’ B) E080°00’ and W100°00’ C) S66°30’ and N66°30’ D) W080°00’ and E080°00’

[GNAV-PT03 #65] Great circle and rhumb line tracks are drawn between N60° W020° and N60° W030°. Which will follow the longer path over the ground? A) Impossible to calculate. B) Both have the same distance. C) The great circle. D) The rhumb line.

[GNAV-PT03 #66] Great circle and rhumb line tracks are drawn between S45° E110° and S45° E115°. Which will follow the shorter path over the ground? A) The rhumb line. B) Impossible to calculate. C) Both have the same distance. D) The great circle.

[GNAV-PT03 #67] Great circle and rhumb line tracks are drawn between N/S00° E005° and N/S00° W015°. Which will follow the shorter path over the ground? A) Both have the same distance. B) The great circle. C) The rhumb line. D) Impossible to calculate.

[GNAV-PT03 #68] Great circle and rhumb line tracks are drawn between S30° E005° and S40° E005°. Which will follow the shorter path over the ground? A) Both have the same distance. B) Impossible to calculate. C) The great circle. D) The rhumb line.

[GNAV-PT03 #69] Between which 2 positions will the difference in distance between the great circle and rhumb line tracks be the greatest? A) N45° W030° and N45° W020° B) S10° E172° and S10° W178° C) N30° E030° and N30° E040° D) N60° W030° and N60° W020°

[GNAV-PT03 #70] Between which 2 positions will the difference in distance between the great circle and rhumb line tracks be the least? A) S60° E172° and S60° E142° B) N10° W170° and N10° E160° C) S30° E090° and N30° E120° D) N45° W030° and N45° W060°

[GNAV-PT03 #71] Between which 2 positions will the difference in distance between the great circle and rhumb line tracks be the greatest? A) N60° W150° and N60° E160° B) N45° W030° and N45° W060° C) S60° E162° and S60° E122° D) S30° E090° and N30° E120°

[GNAV-PT03 #72] Between which 2 positions will the difference in distance between the great circle and rhumb line tracks be the least? A) N45° W030° and N45° W060° B) S80° E172° and S60° E172° C) N10° W170° and N10° E160° D) S30° E090° and N30° E120°

[GNAV-PT03 #73] A rhumb line track is drawn between N50° W020° and N60° W030° on an initial track bearing of 278°T. What is the final rhumb line track bearing? A) 274°T B) 278°T C) 282°T D) 270°T

[GNAV-PT03 #74] What is the northerly rhumb line track bearing along a meridian of longitude? A) 270°T B) 090°T C) 000°T D) 180°T

[GNAV-PT03 #75] The __________ of a great circle is:The point where the great circle bearing measures 090°/270°T.At the highest latitude. A) Vertex B) Simplex C) Vortex D) Vertices

[GNAV-PT03 #76] A small circle:Does not have its __________ passing through the centre of the Earth. A) Vertex B) Plane C) Plain D) Vortex

[GNAV-PT03 #77] A rhumb line is a line of constant bearing.A rhumb-line route __________ the shortest distance between any 2 positions on the Earth (excluding meridians and Equator). A) is B) is not C) intersects D) is parallel to

[GNAV-PT03 #78] Examples of rhumb lines are:The Equator.All __________ of longitude. A) Meridians B) Oblique tracks C) Co-latitudes D) Parallels

[GNAV-PT03 #79] The rhumb line is always on the __________ side of the great circle. A) co-latitude B) anti-meridian C) Equatorial D) Polar

[GNAV-PT03 #80] The rhumb line is __________ to the nearer pole. A) horizontal B) convex C) vertical D) concave

[GNAV-PT03 #81] The great circle is always on the __________ side of the rhumb line. A) anti-meridian B) Polar C) Equatorial D) co-latitude

[GNAV-PT03 #82] The proportional difference in distance between the great circle and rhumb-line routes between any 2 positions increases with:An __________ change in longitude and/or increasing latitude. A) increasing B) constant C) variable D) decreasing

[GNAV-PT03 #83] The change in bearing of a great circle track along a route is known as __________. A) Conversion Angle B) Conversion C) Complacency D) Convergency

[GNAV-PT03 #84] Which factors will cause an increase in convergency (select all that apply)? A) Increasing latitude. B) Increasing change of longitude C) Decreasing change of longitude. D) Decreasing latitude.

[GNAV-PT03 #85] The value of convergency between 2 points along a great circle track, which is also a rhumb line track is <<0>>.

[GNAV-PT03 #86] What is the formulae used to approximate the value of earth convergency, up to 30° difference of longitude? A) Convergency = Change of longitude x Sine mean latitude. B) Convergency = Change of longitude x Cosine mean latitude. C) Convergency = ½ x Change of longitude x Cosine mean latitude. D) Convergency = ½ x Change of longitude x Sine mean latitude.

[GNAV-PT03 #87] What is the formulae used to approximate the value of conversion angle, up to 30° difference of longitude? A) Conversion angle = Change of longitude x Sine mean latitude. B) Conversion angle = ½ x Change of longitude x Sine mean latitude. C) Conversion angle = ½ x Change of longitude x Cosine mean latitude. D) Conversion angle = Change of longitude x Cosine mean latitude.

[GNAV-PT03 #88] Which of the following is a correct derivative of the earth convergency formulae, used to approximate the change of longitude? A) Change of longitude = Convergency ÷ Sine mean latitude. B) ½ x Change of latitude = Convergency x Cosine mean latitude. C) Change of longitude = Convergency x ½ x Sine mean latitude. D) Change of longitude = Convergency x ½ x Cosine mean latitude.

[GNAV-PT03 #89] Which of the following is a correct derivative of the earth convergency formulae, used to approximate the mean latitude? A) Mean latitude = Sine (Convergency x Change of longitude). B) Mean latitude = Sine (Change of longitude ÷ Convergency). C) Mean latitude = Sine⁻¹(Convergency ÷ Change of longitude). D) Mean latitude = Sine⁻¹(Convergency x Change of longitude).

[GNAV-PT03 #90] An aircraft flies from (A) N20° W070° to (B) N40° W100° following a great circle route. The initial direction at point A is 282°T. What is the approximate direction of the route at (B)? A) 274°T B) 297°T C) 267°T D) 290°T

[GNAV-PT03 #91] An aircraft flies from (A) N40° E130° to (B) N50° E156° following a great circle route. The initial direction at point A is 078°T. What is the approximate direction of the route at (B)? A) 069°T B) 060°T C) 087°T D) 096°T

[GNAV-PT03 #92] An aircraft flies from (A) S55° E172° to (B) S65° W172° following a great circle route. The initial direction at point A is 112°T. What is the approximate direction of the route at (B)? A) 126°T B) 119°T C) 098°T D) 105°T

[GNAV-PT03 #93] An aircraft flies along a rhumb line track from (A) S28° E089° to (B) S32° E073°. The initial direction at point A is 266°T. What is the approximate direction of the track at (B)? A) 270°T B) 274°T C) 262°T D) 266°T

[GNAV-PT03 #94] An aircraft flies along a rhumb line track from (A) N41° E145° to (B) N55° E169°. The initial direction at point A is 073°T. What is the approximate direction of the track at (B)? A) 085°T B) 079°T C) 073°T D) 067°T

[GNAV-PT03 #95] What is the initial bearing at (A) of the rhumb line track from (A) N52°00’ E001°30’ to (B) N52°00’ W003°30’? A) 269°T B) 270°T C) 268°T D) 271°T

[GNAV-PT03 #96] What is the final bearing at (B) of the rhumb line track from (A) S30°00’ E165°45’ to (B) S30°00’ W174°15’? A) 085°T B) 095°T C) 080°T D) 090°T

[GNAV-PT03 #97] What is the initial bearing at (A) of the rhumb line track from (A) N52°00’ E001°30’ to (B) N48°00’ E001°30’? A) 179°T B) 180°T C) 178°T D) 181°T

[GNAV-PT03 #98] Given that the rhumb line track between (A) S40°00’ E108°00’ and (B) S45°00’ E117°00’ is 109°T, what is the initial bearing at (A) of the great circle track between the same 2 points? A) 112°T B) 106°T C) 109°T D) 115°T

[GNAV-PT03 #99] Given that the rhumb line track between (A) N22°00’ W010°00’ and (B) N28°00’ W024°00’ is 281°T, what is the final bearing at (B) of the great circle track between the same 2 points? A) 275°T B) 284°T C) 278°T D) 287°T

[GNAV-PT03 #100] An aircraft flies from (A) latitude 20° W070° to (B) latitude 40° W090° following a great circle route. The initial direction at point A is 282°T and at B is 287°T. In which hemisphere is the route? A) Western hemisphere. B) Northern hemisphere. C) Eastern hemisphere. D) Southern hemisphere.

[GNAV-PT03 #101] An aircraft flies from (A) latitude 40° W005° to (B) latitude 50° E008° following a great circle route. The initial direction at point A is 084°T and at B is 093°T. In which hemisphere is the route? A) Western hemisphere. B) Eastern hemisphere. C) Northern hemisphere. D) Southern hemisphere.

[GNAV-PT03 #102] An aircraft flies from (A) N50°00’ W134°00’ to (B) N55°00’ x° following a great circle route. The initial direction at point A is 083°T and at B is 089°T. What is the approximate longitude of (B)? A) W126°30’ B) W141°30’ C) W130°15’ D) W137°45’

[GNAV-PT03 #103] An aircraft flies from (A) S28°00’ W004°00’ to (B) S20°00’ x° following a great circle route. The initial direction at point A is 274°T and at B is 282°T. What is the approximate longitude of (B)? A) E023°40' B) W023°40' C) E003°15' D) W011°15'

[GNAV-PT03 #104] An aircraft flies along a great circle route between 2 positions, separated by meridians 20° apart, on the same parallel of latitude. The initial great circle at point A is 096°T. What is the approximate latitude of the parallel? A) E005°40’ B) N36°50’ C) S36°50’ D) S17°30’

[GNAV-PT03 #105] An aircraft flies along a great circle route between 2 positions, separated by meridians 16°30’ apart, on the same parallel of latitude. The initial great circle at point A is 272°T. What is the approximate latitude of the parallel? A) S14°00’ B) E016°30’ C) N07°00’ D) N14°00’

[GNAV-PT03 #106] This question is designed to test several areas of knowledge:An aircraft passes overhead (A) at 15.19 UTC as it flies along a rhumb line track at an average groundspeed of 380 kt, between 2 positions, (A) and (B), separated by meridians 28°00’ apart, located on the same parallel of latitude. Given that the initial great circle bearing at point (A) is 266°T, what is the estimated time of overflight (ETO) at point (B)? A) 16.35 UTC B) 19.33 UTC C) 15.57 UTC D) 19.41 UTC

[GNAV-PT03 #107] This question is designed to test several areas of knowledge: An aircraft flies along a rhumb line track at an average groundspeed of 577.4 km/hr, between 2 positions, (A) and (B), separated by meridians 12°00’ apart, and located on the same parallel of latitude. It passes overhead (A) at 09.24 UTC. Given that the initial great circle bearing at point (A) is 087°T, what is the estimated time of overflight (ETO) at point (B)? A) 14.16 UTC B) 11.24 UTC C) 11.42 UTC D) 10.33 UTC

[GNAV-PT03 #108] 2 possible direct paths between 2 points are:A great circle track.A __________ __________ track. A) Radian line B) Rhumb Line C) Reverse line D) Rum line

[GNAV-PT03 #109] A great-circle route which follows the path of a meridian of longitude or the Equator is also a rhumb line, and __________ change bearing. A) does B) sometimes C) always D) does not

[GNAV-PT03 #110] Any great circle route, other than a meridian of longitude or the Equator, intersects converging meridians at changing angles, and as such, its true __________ changes. A) conversion angle B) bearing C) relative bearing D) convergency

[GNAV-PT03 #111] The change of great circle track bearing between 2 points, measured across the surface of the Earth, is a definition of __________ __________. A) Chart Convergency B) Earth convergency C) Earth conversion angle D) Chart conversion angle

[GNAV-PT03 #112] Earth convergency __________ with increasing: Change of longitude. Latitude. A) varies neagtively B) decreases C) increases D) remains constant

[GNAV-PT03 #113] The formulae used to approximate the value of earth convergency, up to 30° difference of longitude, is: (Earth) Convergency = Change of longitude x __________ latitude. A) Cosine mean B) Tangent C) Sine D) Sine mean

[GNAV-PT03 #114] A rhumb line track is a track of constant bearing.The difference between the rhumb line track and the great circle track is known as __________ __________. A) Conversion angle B) Divergency bearing C) Conversion bearing D) Convergency angle

[GNAV-PT03 #115] Conversion angle can be found between the great circle track bearing and the rhumb line track bearing at __________ end of the route. A) only departure B) mid-point or either C) only arrival D) either departure or arrival

[GNAV-PT03 #116] The formulae used to approximate the value of conversion angle, up to 30° difference of longitude, is: Conversion Angle = ½ x __________.This can also be used to calculate an unknown longitude from a known longitude. A) Conversion B) Convergency C) Change of latitude D) Change of longitude

[GNAV-PT03 #117] At 10:00 UTC an aircraft departs position A 51°30'N, 001°59'W and flies on a track of 270° at a groundspeed of 390 kt. What is the aircraft's position at 11:30 UTC?

[GNAV-PT03 #118] In a VFR cross-country flight, a landmark is spotted on a relative bearing of 315°. Three minutes later the same landmark is observed on a relative bearing of 270°. If the TAS is 90 kt and there is a tailwind of 30 kt, what is the distance to the landmark at the time of the second bearing?

[GNAV-PT03 #119] What is a line drawn on a chart which joins all points where the value of magnetic variation is zero?

[GNAV-PT03 #120] Deviation applied to magnetic heading gives:

[GNAV-PT03 #121] The angle between True North and Magnetic North is called:

[GNAV-PT03 #122] An Island is observed to be 30° to the right of the aircraft's longitudinal axis. The aircraft heading is 290°M, variation 10°E. The bearing from the aircraft to the Island is:

[GNAV-PT03 #123] Contour lines on aeronautical maps and charts connect points:

[GNAV-PT03 #124] On a Polar Stereographic chart, the initial great circle course from A 70°N 060°W to B 70°N 060°E is approximately:

[GNAV-PT03 #125] The rhumb line track from A 53° 50'N, 006° 55'E to B 53° 00'N, 015° 40'E is 099°. Calculate the initial True Track along the great circle.

[GNAV-PT03 #126] On a chart a straight line is drawn between two points and has a length of 4.63 cm. What is the chart scale if the line represents 150 NM?

[GNAV-PT03 #127] A straight line route ls drawn on a Direct Mercator chart from position A 45°30'N, 013°25'W to position B 41°42'N, 003°S57'E. The rhumb line track measured at A ls 129° T. What is approximately the great circle track from A to B, measured at position A?

[GNAV-PT03 #128] Calculate the value of the Earth Convergency, to the nearest whole degree, between positions A (53°45'N, 177°05'W) and B (65°05'N, 161°10'E).

[GNAV-PT03 #129] A pilot is flying from A 60°S, 165°W to B 60°S, 177°E. What is the angle between the initial true great circle track and the true rhumb line track?

[GNAV-PT03 #130] If an aircraft flies along a VOR radial it will follow a:

[GNAV-PT03 #131] Consider any two positions with a difference in Longitude of 7°. The proportional difference between the rhumb line distance and the great circle distance between the two positions increases with:

[GNAV-PT03 #132] What is the formula used to calculate convergency between two positions relatively close to each other? Convergency = Difference in: