BAvn Bachelor of Aviation Navigation and Instruments 1 — Questions and Answers
Question 1: What does the Attitude Indicator (AI) display to a pilot?
- The aircraft's pitch and bank angle relative to the horizon (Correct answer)
- The aircraft's altitude above sea level
- The aircraft's heading relative to magnetic north
- The aircraft's rate of climb or descent
Correct answer: The aircraft's pitch and bank angle relative to the horizon
The Attitude Indicator uses a gyroscope to display the aircraft's pitch (nose up/down) and bank (roll) relative to the natural horizon.
Question 2: Which type of navigation uses radio signals from ground stations to determine position?
- VOR navigation (Correct answer)
- Inertial Navigation System (INS)
- GPS navigation
- Dead reckoning
Correct answer: VOR navigation
VOR (VHF Omnidirectional Range) navigation uses radio signals from ground-based stations to define radials that aircraft use to determine position and track.
Question 3: What is magnetic variation?
- The angular difference between true north and magnetic north at a given location (Correct answer)
- The rate of change of compass heading
- The deviation caused by aircraft metal near the compass
- The difference between indicated and calibrated airspeed
Correct answer: The angular difference between true north and magnetic north at a given location
Magnetic variation (declination) is the angle between true north and magnetic north, which varies by geographic location and must be applied when converting between true and magnetic headings.
Question 4: What does DME stand for and what does it measure?
- Distance Measuring Equipment; it measures slant range distance to a ground station (Correct answer)
- Directional Magnetic Equipment; it measures heading error
- Digital Map Engine; it displays moving map data
- Density Measuring Equipment; it measures air density
Correct answer: Distance Measuring Equipment; it measures slant range distance to a ground station
DME (Distance Measuring Equipment) measures slant range distance between the aircraft and a ground-based transponder beacon.
Question 5: The pitot-static system provides inputs to which three instruments?
- Airspeed Indicator, Altimeter, and Vertical Speed Indicator (Correct answer)
- Heading Indicator, Turn Coordinator, and Altimeter
- Attitude Indicator, Airspeed Indicator, and Heading Indicator
- VSI, Gyrocompass, and Altimeter
Correct answer: Airspeed Indicator, Altimeter, and Vertical Speed Indicator
The pitot-static system supplies ram air pressure and static pressure to the Airspeed Indicator, Altimeter, and Vertical Speed Indicator.
Question 6: In GPS navigation, what is RAIM?
- Receiver Autonomous Integrity Monitoring, a system that verifies GPS signal integrity (Correct answer)
- Radio Altitude Inertial Measurement
- Radar Altimeter Interface Module
- Route Automation and Instrument Mode
Correct answer: Receiver Autonomous Integrity Monitoring, a system that verifies GPS signal integrity
RAIM (Receiver Autonomous Integrity Monitoring) detects GPS errors by cross-checking satellite signals, ensuring navigation data is reliable enough for the intended flight phase.
BAvn Bachelor of Aviation Navigation and Instruments 1
What does the Attitude Indicator (AI) display to a pilot?