Unit 10 - Navigation Systems

(Refer to illustration 5.) The VOR receiver has the indications shown. What radial is the aircraft crossing? (Fig. 28) A) 030°. B) 210°. C) 300°.

A) 030°.

The VOR is tuned to Elizabeth City VOR/DME (area 3 in Figure 20), and the aircraft is positioned over Shawboro, a small town 3 NM west of Currituck County Regional (ONX). Which VOR indication is correct? (Figs. 20 and 28) A) 5 B) 2 C) 8

A) 5

(Refer to area 5.) The VOR is tuned to the Dallas/Fort Worth VOR. The omnibearing selector (OBS) is set on 253°, with a TO indication, and a right course deviation indicator (CDI) deflection. What is the aircraft's position from the VOR? (Fig. 25) A) East-northeast. B) North-northeast. C) West-southwest.

A) East-northeast.

What is the approximate position of the aircraft if the VOR receivers indicate the 245° radial of Sulphur Springs VOR-DME (area 5) and the 140° radial of Bonham VORTAC (area 3)? (Fig. 24) A) Glenmar Airport. B) Caddo Mills Airport. C) Majors Airport.

A) Glenmar Airport.

What is a consideration when using a hand-held GPS for VFR navigation? A) Position accuracy may degrade without notification. B) RAIM capability will be maintained for entire flight. C) Waypoints will still be accurate even if database is not current.

A) Position accuracy may degrade without notification.

When navigating using only VOR/DME based RNAV, selection of a VOR NAVAID that does not have DME service will A) result in loss of RNAV capability. B) have no effect on navigation capability. C) not impact navigation provided enough GPS is operating.

A) result in loss of RNAV capability.

What is your approximate position on low altitude airway Victor 1, southwest of Norfolk (area 1), if the VOR receiver indicates you are on the 340° radial of Elizabeth City VOR (area 3)? (Fig. 20) A) 15 nautical miles from Norfolk VORTAC. B) 18 nautical miles from Norfolk VORTAC. C) 23 nautical miles from Norfolk VORTAC.

B) 18 nautical miles from Norfolk VORTAC.

What procedure could a pilot use to navigate under VFR from one point to another when ground references are not visible? A) Dead reckoning. B) Pilotage. C) VFR is not allowed in these circumstances.

B) Pilotage.

(Refer to illustration 3.) The VOR receiver has the indications shown. What is the aircraft's position relative to the station? (Fig. 28) A) East. B) Southeast. C) West.

B) Southeast. If you were east, you would have a TO indication. The 120° radial is southeast, not west. With no TO or FROM indications showing on VOR 3, Fig. 28, you must be flying in the zone of ambiguity from the VOR, which is perpendicular to the OBS setting, i.e., on the 120° or 300° radials. Since you have a right deflection, you would be on the 120° radial, or southeast of the VOR.

What is the approximate position of the aircraft if the VOR receivers indicate the 340° radial of Savannah VORTAC (area 3) and the 184° radial of Allendale VOR (area 1)? (Fig. 23) A) Town of Guyton. B) Town of Springfield. C) 3 miles east of Briggs.

B) Town of Springfield.

The Global Positioning System is A) ground based. B) satellite based. C) antenna based.

B) satellite based.

If Receiver Autonomous Integrity Monitoring (RAIM) capability is lost in-flight, A) the pilot may still rely on GPS derived altitude for vertical information. B) the pilot has no assurance of the accuracy of the GPS position. C) GPS position is reliable provided at least 3 GPS satellites are available.

B) the pilot has no assurance of the accuracy of the GPS position.

When the course deviation indicator (CDI) needle is centered using a VOR test signal (VOT), the omnibearing selector (OBS) and the TO/FROM indicator should read A) 180° FROM, only if the pilot is due north of the VOT. B) 0° TO or 180° FROM, regardless of the pilot's position from the VOT. C) 0° FROM or 180° TO, regardless of the pilot's position from the VOT.

C) 0° FROM or 180° TO, regardless of the pilot's position from the VOT.

The VOR is tuned to Jamestown VOR (area 4 in Figure 26), and the aircraft is positioned over Cooperstown Airport (area 2 in Figure 26). Which VOR indication is correct? (Figs. 26 and 28) A) 1 B) 6 C) 4

C) 4 Cooperstown Airport (northeast of 2 in Fig. 26) is located on the 028° radial of the Jamestown VOR (south of 4). With a centered needle you could have an OBS setting of 028° and a FROM indication or an OBS setting of 208° and a TO indication. VOR 4 fits the aircraft's location over Cooperstown Airport. You have a TO indication with an OBS setting of 210° and a half-scale deflection of the CDI to the left (because Cooperstown Airport is north of your selected course). You are thus on approximately the 028° radial.

How many Global Positioning System (GPS) satellites are required to yield a three-dimensional position (latitude, longitude, and altitude) and time solution? A) 5 B) 6 C) 4

C) 4 GPS satellites broadcast radio signals that are decoded by a receiver in order to triangulate a three-dimensional position by calculating distances based on the amount of time it takes the radio signals to reach the receiver. At least four GPS satellites are required to yield a three-dimensional position (latitude, longitude, and altitude) and time solution.

The VOR is tuned to Jamestown VOR (area 4 in Figure 26), and the aircraft is positioned over Cooperstown Airport (area 2 in Figure 26). Which VOR indication is correct? (Figs. 26 and 28) A) 9 B) 2 C) 4

C) 4 VOR 9 shows the aircraft's location on the 030° radial, which places it slightly south of Cooperstown Airport.

The VOR is tuned to Bonham VORTAC (area 3 in Figure 24) and the aircraft is positioned over the town of Sulphur Springs (area 5 in Figure 24). Which VOR indication is correct? (Figs. 24 and 28) A) 1 B) 8 C) 7

C) 7 With indication 1, the aircraft would have to be north of Sulphur Springs. In addition, the VOR shows a TO indication, indicating the aircraft is not in the zone of ambiguity.

Where can locations for VOR test facilities be found? A) Aeronautical Information Manual. B) Sectional charts. C) Chart Supplement.

C) Chart Supplement.

Which of the following is a true statement concerning the Global Positioning System? A) Advances in technology make it possible to rely completely on GPS units. B) GPS databases and paper navigational charts are updated at the same time. C) Navigating by GPS must be integrated with other forms of navigation.

C) Navigating by GPS must be integrated with other forms of navigation.

(Refer to illustration 8.) The VOR receiver has the indications shown. What is the aircraft's position relative to the station? (Fig. 28) A) North. B) East. C) South.

C) South.

What should the airborne accuracy of a VOR be? A) ±4° B) ±5° C) ±6°

C) ±6° The accuracy of the VOR should be ±4° for ground checks or ±6° for airborne checks.