Aircraft Performance for the ATPL is split into two helicopter categories:
- Single Engine Piston (SEPH)
- Twin Engine Turbine (TETH)
The content of this book is produced in the same order, building up a complete understanding of helicopter performance from small to large helicopters. Before starting on the SEPH there are a number of terms and definitions that have to be understood. A number of EASA regulations concerning Performance are reproduced as they apply to each aspect of Performance.