Completing landing challenges is the most efficient way to get this since it also adds to other achievements, but there is an easier way to get this if you just want three achievements quickly.
- Turn of all assists.
- Select any aircraft, doesn't matter which one
- Select WX53-Bugalaga as your arrival airport
- Select WABS-Sinak as your departure airport making sure you start at a ramp. That's important since starting on the runway already has the engines running and that voids the 'no assists' portion.
- As soon as you are in the airplane, choose to 'Travel to -> Taxi' and respond to the prompts.
Achievement should pop during the loading screen.
This will also unlock