## The formulas covered

The e-book covers the following ATPL General Navigation calculations:

- Track angle error
- Closing angle
- Convergency (Earth)
- Convergency (Lambert’s projection)
- Conversion angle
- Departure
- Departure: Change with latitude (Mercator chart)
- Scale: Representative fraction
- Scale: Change with latitude (Mercator chart)
- Rate of descent
- Climb / Descent gradient
- Crosswind
- Drift
- Headwind

## What’s inside?

1

**A description of the formula** to understand what is being calculated.

2

A formula in a **friendly non-maths format** that can be easily remembered.

3

An explanation with **units to be used** to get a correct result.

4

A sample question from the official **EASA / UK CAA question bank**.

5

A detailed **step-by-step solution** for the example given.

6

**A cheat sheet** with all formulas from the particular subject altogether.

Get **6 e-books** for **£18** only!