11.   On the third side of the porch he attached a huge wooden crate that an airplane engine had come in.

12.   Only a handful of companies make airplane engines, and only a handful of customers buy them.

13.   Such basic design flaws are easy enough to test for in relatively simple hardware, such as an airplane engine.

14.   Textron Lycoming builds airplane engines at a factory in Williamsport, Pennsylvania.

15.   The airport shoots thousands every year to keep them out of the airplane engines.

16.   The company also is working on software programs that can produce lifelike three-dimensional computer simulations of complex objects such as body parts or airplane engines.

17.   The hulking cylinder jammed halfway through her back shed had been an airplane engine.

18.   The Nazis isolated the Staszic Chamber and reinforced its floor with concrete to build a factory to construct and assemble airplane engines.

19.   The Mexico City airport, closed Monday night because of the peril volcanic ash poses airplane engines, reopened Tuesday morning.

20.   Toyota will sell water-skiing boats and marine engines in the U.S. and is considering selling airplane engines.