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105+ Free DGCA CPL Air Navigation Practice Questions

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Key Facts: DGCA CPL Air Navigation Exam

100

Exam Questions

DGCA CEO

3 hours

Time Limit

DGCA CEO

70%

Passing Score

DGCA

₹2,500

Exam Fee

DGCA Pariksha Portal

5 years

Result Validity

DGCA Rules

No negative

Marking Policy

DGCA CEO

The DGCA CPL Air Navigation exam is a 100-question, 3-hour computer-based exam costing ₹2,500. Candidates must score at least 70% to pass. The test focuses heavily on navigation mathematics, including chart scales, track/heading conversions, wind drift triangles, altitude/TAS density calculations using flight computers, and tracking radials or bearings using VOR, DME, and ADF radio aids.

Sample DGCA CPL Air Navigation Practice Questions

Try these sample questions to test your DGCA CPL Air Navigation exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 105+ question experience with AI tutoring.

1Which of the following best describes the shape of the Earth used as the basis for standard aviation navigation models?
A.A perfect sphere
B.An oblate spheroid, flattened at the equator
C.An oblate spheroid, flattened at the poles
D.A prolate spheroid, elongated at the poles
Explanation: The Earth is not a perfect sphere; it is an oblate spheroid. Centrifugal force from its rotation causes a bulge at the equator and flattening at the poles. Navigation models like WGS-84 approximate this shape, where the polar diameter is approximately 23 nautical miles shorter than the equatorial diameter.
2One nautical mile is defined internationally as exactly how many meters?
A.1,500 meters
B.1,609 meters
C.1,852 meters
D.2,000 meters
Explanation: A nautical mile (NM) is defined internationally as exactly 1,852 meters (6,076.1 feet). This distance historically represents one minute of arc along a meridian of longitude. It differs from the statute mile, which is 1,609 meters (5,280 feet).
3Which of the following is a key characteristic of a Great Circle track on the Earth's surface?
A.It cuts all meridians at the same angle
B.It represents the shortest distance between any two points on a sphere
C.It is a line of constant magnetic heading
D.It is always parallel to the equator
Explanation: A Great Circle is a circle on the surface of a sphere whose plane passes through the center of the sphere. It represents the shortest distance between any two points on the sphere. Because it does not cross meridians at a constant angle (except the equator or meridians themselves), its true direction changes continuously.
4What is a Rhumb Line track?
A.The shortest path between two points on the Earth
B.A curved line on the Earth's surface that cuts all meridians at a constant angle
C.A circle whose plane does not pass through the center of the Earth
D.A line that is always perpendicular to the magnetic meridian
Explanation: A rhumb line (loxodromic curve) is a line on the Earth's surface that cuts all meridians of longitude at the same angle. While it is easier to steer because the heading remains constant, it represents a longer distance between two points than a Great Circle track (except along the equator or meridians).
5What is the term for the angular difference between True North and Magnetic North at any given location?
A.Magnetic Deviation
B.Compass Error
C.Magnetic Variation
D.Angle of Dip
Explanation: Magnetic variation (also known as magnetic declination) is the angular difference between True North (determined by the geographic poles) and Magnetic North (determined by the Earth's magnetic poles) at a specific geographic location. It is expressed in degrees East or West depending on which direction Magnetic North lies relative to True North.
6Which of the following causes magnetic deviation in an aircraft's compass?
A.The rotation of the Earth on its axis
B.Metallic structures, electrical wiring, and avionics inside the aircraft
C.The movement of the magnetic poles relative to the geographic poles
D.Solar radiation and ionospheric interference
Explanation: Magnetic deviation is the compass error caused by local magnetic fields inside the aircraft. These fields are generated by magnetized steel structures, flowing electrical currents in wiring, and operating avionics. Pilots use a compass correction card to account for deviation on different headings.
7Along a meridian of longitude, what distance is represented by one minute of latitude arc?
A.1 nautical mile
B.1 statute mile
C.60 nautical miles
D.1 kilometer
Explanation: Along a Great Circle (like any meridian of longitude), one degree of latitude arc equals 60 nautical miles. Since one degree contains 60 minutes, one minute of latitude arc equals exactly 1 nautical mile (1 NM). This relationship is the basis for measuring distance on aviation charts.
8What is the difference between geocentric latitude and geodetic latitude?
A.Geocentric latitude is measured from the equator; geodetic latitude is measured from the prime meridian
B.Geocentric latitude is the angle between the equator plane and a line to the Earth's center; geodetic latitude is based on the ellipsoid normal line
C.Geocentric latitude is measured in degrees; geodetic latitude is measured in kilometers
D.Geocentric latitude assumes a flat Earth; geodetic latitude assumes a spherical Earth
Explanation: Geocentric latitude is the angle at the center of the Earth between the equatorial plane and the radius line to a point. Geodetic latitude is the angle between the equatorial plane and a line normal (perpendicular) to the reference ellipsoid at that point. Because the Earth is flattened, the normal line does not pass through the center of the Earth except at the equator and the poles.
9An aircraft is flying on a True Heading (TH) of 085°. The local magnetic variation is 6° West. What is the Magnetic Heading (MH)?
A.079°
B.085°
C.091°
D.145°
Explanation: To convert True Heading to Magnetic Heading, use the formula: MH = TH - (+/- Variation). Remember the rule: 'Variation West, Magnetic Best' (add West variation to True to get Magnetic). Thus, MH = 085° + 6° = 091°.
10If the Magnetic Heading (MH) is 240° and the compass correction card indicates a deviation of 3° East on this heading, what is the Compass Heading (CH) to fly?
A.237°
B.240°
C.243°
D.246°
Explanation: To convert Magnetic Heading to Compass Heading, use the rule: 'Deviation East, Compass Least' (subtract East deviation). Therefore, CH = MH - Deviation East = 240° - 3° = 237°.

About the DGCA CPL Air Navigation Exam

The DGCA CPL Air Navigation exam is a core theoretical requirement for obtaining a Commercial Pilot License in India. It tests a pilot candidate's knowledge of Earth geometry, aeronautical charts (primarily Mercator and Lambert's Conformal Conic), dead reckoning principles, wind triangle calculations, flight navigation computer (E6B / CX-3) operations, flight planning (including point of no return and alternate planning), and radio navigation systems (VOR, DME, ADF, ILS, GNSS). This exam is known for its rigorous math-based questions requiring exact calculations.

Assessment

100 multiple-choice questions (MCQs)

Time Limit

3 hours

Passing Score

70%

Exam Fee

₹2,500 (Directorate General of Civil Aviation (DGCA), India)

DGCA CPL Air Navigation Exam Content Outline

20%

Earth Geometry and Magnetism

Great circles, rhumb lines, latitude and longitude coordinates, conversion between nautical miles, statute miles, kilometers, and feet, magnetism, variation, deviation, and compass heading conversions.

20%

Aviation Charts and Projections

Mercator projection principles, Mercator scale variation, Lambert's Conformal Conic projection, convergence and conversion angle, chart scale calculations, and drawing navigation tracks.

25%

Dead Reckoning and Wind Triangle Mechanics

Wind triangles, Heading, Track, Ground Speed, Wind Correction Angle, drift angle, calculation of wind direction and speed from flight parameters, and flight logs.

15%

Flight Computer Math & Flight Planning

Using E6B/CX-3 to calculate TAS, density altitude, fuel burn, climb/descent rates, point of no return (PNR), and critical point (CP) calculations.

20%

Radio Navigation Aids & Instruments

Operating principles, errors, and pilot displays for VOR (VHF Omnidirectional Range), DME (Distance Measuring Equipment), ADF (Automatic Direction Finder) / NDB (Non-Directional Beacon), and ILS (Instrument Landing System).

How to Pass the DGCA CPL Air Navigation Exam

What You Need to Know

  • Passing score: 70%
  • Assessment: 100 multiple-choice questions (MCQs)
  • Time limit: 3 hours
  • Exam fee: ₹2,500

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

DGCA CPL Air Navigation Study Tips from Top Performers

1Practice wind triangle calculations daily; you should be able to quickly find heading and ground speed given wind, TAS, and track.
2Understand the difference between Great Circles and Rhumb Lines, especially how they project as straight lines or curves on Mercator and Lambert charts.
3Master E6B density altitude and True Airspeed calculations. Remember that TAS increases by approximately 2% per 1,000 feet of altitude above pressure altitude.
4Memorize the relationship: Track = Heading +/- Drift, and Heading = Track +/- Wind Correction Angle (WCA). Check your signs carefully.
5Learn VOR and ADF tracking geometry. Know how to calculate Relative Bearing (RB), Magnetic Bearing (MB), and Magnetic Heading (MH) using the formula: MB (to station) = MH + RB.
6Practice time-distance-fuel math and worked-gradient calculations (e.g., converting climb gradient in percentage or ft/NM into rate of climb in feet per minute based on ground speed).
7Do not rush. With 3 hours for 100 questions, you have 1.8 minutes per question. Read carefully and verify your calculation steps before selecting an answer.

Frequently Asked Questions

What is the fee for the DGCA CPL Air Navigation exam?

The regular application fee is ₹2,500 per attempt. Candidates register and pay online through the official DGCA Pariksha portal using their Computer Number.

How many questions are there and what is the time limit?

The exam consists of 100 multiple-choice questions, and candidates are given a total of 3 hours (180 minutes) to complete it. There is no negative marking.

What is the passing score for the DGCA CPL Air Navigation exam?

You must score a minimum of 70% (at least 70 out of 100 correct answers) to pass the exam.

What materials are allowed in the DGCA Air Navigation exam?

Candidates are typically allowed to bring a mechanical navigation computer (such as the Jeppesen E6B or Sanderson flight computer), navigation rulers, protractors, dividers, and non-programmable calculators (though policy may vary by center; always check current CEO guidelines).

What are the recommended books for DGCA CPL Air Navigation?

Commonly recommended prep books include 'Air Navigation' by Air Commodore (Retd) RK Bali, Oxford Aviation Academy's General Navigation and Radio Navigation volumes, and Trevor Thom's manuals.

How long is my pass result valid?

A passing result in any DGCA pilot licensing theoretical exam is valid for a period of 5 years (60 months) from the date of the result publication to secure the commercial pilot license.