DGCA Air Navigation Exam Calculation

Position and Directions on the Surface of Earth: Finding Great Circle Distance using change in Latitude and Longitude – Conversion between True, Magnetic and Compass Directions

Heading and Height using 1 in 60 Rule: Alteration of heading using Closing Angle and Double Track Error – Estimation of Height of Hill or Tower

Scale of Maps and Charts: Conversion between Representative Fraction and Statement in Words – Finding distances on earth and length on chart

Finding and Applying winds using Vector Triangle on CX-3: Find Wind Velocity, Heading, Track, TAS and Ground Speeds – Find Head and Tail wind Components

Earth Convergence and Conversion Angle: Calculation of Great Circle and Rhumb line tracks using Convergency and Conversion Angle

Departure Calculations: Distance calculations using Departure Formulae – Distance Calculations

Mercator Chart Calculations: Finding Mercator Scale and Earth Distance at a Latitude

Lambert Chart Calculations: Estimation of Lambert Scale using One Sixth Rule – Finding Great Circle Directions

Polar stereographic Chart Calculations: Calculation of Great Circle Track in North and South PSP using Geometry

Conversion of Time: Conversion between GMT, LMT, ZT, ST and IST

Calculations using an Air Almanac: Calculation of Sunrise, Sunset and Twilight

Outside Air Temperature Numericals: Calculation of TAT RAT SAT and Unit Conversion between °C, °F and °K

Conversion between Air Speed and Mach Number: Calculation of CAS RAS EAS and TAS – Calculation of Mach Number and Local Speed of Sound

Numericals involving Altimeter Settings: Conversion between QFE QNH and QFF – Calculation of True, Indicated, Pressure and Density Altitudes

Interpretation of Direct Indicating Compass: Deviation Compass Swing Procedure – Turn and Acceleration Errors in Direct Reading Compass

Interpretation of Artificial Horizon: Rate of Turn and Bank Angle Calculations using Artificial Horizon

Operational Flight Plan: Preparation of an Operational flight plan – Calculations involving Nautical Air Miles and Nautical Ground Miles

Critical Point: Calculation of Critical Point under Normal and Engine Failure conditions

Point of No Return: Calculation of Point of Safe Return under Normal and Engine Failure conditions – Specific Air Range Calculations

Numericals involving Climb and Descent Phase: Calculation of Distance and Time during Climb and Descend

Aircraft Load calculations: Calculation of Traffic Load and Extra Fuel using MTOM MLM & ZFM

Aircraft Centre of Gravity Numericals: Aircraft Weighing Procedure – Shift of CG by Moving and Adding Load

Fuel Planning: Calculation of Weight, Volume, Specific Gravity and Density of fuel

Basic Radio Wave Theory: Calculation of Speed, Frequency, Wavelength, Band and Power or Radio Waves

Interpretation of ADF using Relative Bearing Indicator: Interpretation of Relative Bearing Indicator – Calculation of distance from ADF by change in Relative Bearing

Interpretation of VOR using RMI, CDI and HSI: Range of VOR using Line of Sight Equation – Interpretation of RMI CDI HSI

Holding and Instrument Let Down Procedures: Holding Pattern – Radial Interception and Maintenance

Calculations using ILS Indications: Coverage of Localiser and Glide Slope – Height and Distance on ILS using RMI CDI and HSI – Rate of Descent Calculation

Numericals on Radar Theory: Max and Min range of Radar using PW, PRF and PRR – Calculation of Radar Resolution

Calculations in Airborne Weather Radar and Distance Measuring Equipment: Calculation of Base and Top of CB Cloud – Finding the Slant and Plan Range in DME