1. The airplane is taxiing down the runway.

2. The plane started taxiing down the runway.

3. The plane taxied/was taxiing along the runway.

4. The aircraft began taxiing at 13:50 and took off into the northwest wind at 13:58.

5. This may be the most stunning B-1 Lancer video ever.Video includes: B-1 Bombers taxiing, takeoff, aerial refueling, bomb drop training, and landing.A marvel

6. with regard to third parties, the use of an aircraft from the moment when power is applied to its engines for the purpose of taxiing or actual take-off until the moment when it is on the surface and its engines have come to a complete stop