H145 Flight Perfo is an Airbus application designed to easily and safely compute the BK117 helicopter performance.
The performance is in accordance with either the BK117 D-2 (Helionix Step 2) Flight Manual or the BK117 D-3 Flight Manual, as selected by the user. The performance calculation is based on the flight conditions and the helicopter’s configuration (including optional equipment which affects performance) as set by the user.

The application covers the following performance areas :
- Maximum Takeoff Mass, Maximum Landing Mass
- Hover, Climb, Level flight
- Ceiling
- Best Endurance Speed, Best Range Speed, Maximum Speed
- Fuel Flow, Range, Endurance
- Height-Velocity envelope
- Clear heliport, Surface level heliport, Elevated heliport, Helideck
- Human External Cargo operations
- Category A, Category B
- Performance Class 1, Performance Class 2
- Performance in Training mode
- All Engines Operating performance, One Engine Inoperative performance
- Payload-Range