1.   All planes are grounded until the fog clears.

2.   The plane was grounded by mechanical problems.

3.   The rudder felt as if it were covered with barnacles, and the engine sounded old and tired, but there was no reason for grounding the plane.

4.   As a result, it is possible some planes will be grounded to meet the regulation.

5.   Before he left Vero Beach, Zeile received a call from his wife Julianne that the plane was grounded due to mechanical problems.

6.   After hurried discussions between a fuel manager and the control tower, the waiting planes were grounded and the passengers were told to disembark.

7.   Airlines reacted to the slowing economy and decreasing air travel by grounding aging planes.

8.   But the board stopped short of grounding the planes, or even declaring them unsafe.

9.   But the board did not ground the planes or even declare them unsafe, and Boeing and the FAA disagreed that the plane was less airworthy than others.

10.   But the board stopped short of grounding the planes, or even declaring the planes unsafe.