When a clearance includes a fix or waypoint “direct,” the basic idea is that the cleared route from your present position or the specified point goes directly to that fix, subject to the rest of the clearance and any applicable procedures.
The key questionWhat exactly did ATC clear you to do, and what navigation source are you using to comply with it?
On a practical level, this means you should be able to identify the fix, select the appropriate navigation source, confirm the course or bearing, and monitor whether the aircraft is actually doing what you expect.
Don't confuse the clearance with the button you press
Your avionics may give you several ways to build or activate a route. The legal/operational question is the clearance; the avionics action is the means of navigating it.
Build the habit
- Read the clearance back accurately.
- Identify the next required fix or segment.
- Confirm the active navigation source.
- Cross-check the display against the chart or procedure you are flying.
- If the clearance or your interpretation is unclear, clarify it.