11.   The impact damaged an engine but otherwise caused no serious harm to the plane or passengers.

12.   The test was halted Saturday, when the right engine was damaged during an oil change.

13.   What could be done to right the imbalance without damaging the engine of economic growth?

14.   Protesters stopped an express train near the industrial town of Tongi near Dhaka and damaged its engine.

15.   An American Airlines official also said that some pilots were advised to alter their flight paths to avoid the volcanic dust, which can damage engines.

16.   An American Airlines official said some pilots were advised to alter their flight paths to avoid the volcanic dust, which can damage engines.

17.   At the nearby town of Tongi, protesters beat the driver of an express train and damaged the engine, the news agency said.

18.   But some airlines have canceled flights to Mexico City for fear that ash already spewed by the volcano may damage their engines.

19.   Even helicopters are unable to fly over the sand because it damages their engines.

20.   Gasoline and diesel often have been sold diluted with kerosene, damaging car engines.