1.   Nothing, save an accident or mechanical failure could keep him from winning.

2.   Take-off even in the conventional manner is a critical phase, unforgiving of mechanical failure or human error.

3.   The crashes have been attributed to a variety of problems, from human error to software glitches to mechanical failure.

4.   The flight has been canceled due to mechanical failure.

5.   The flight has been cancelled due to mechanical failure.

6.   During the World Wars, fighter pilots adopted the fanciful notion that gremlins were responsible for mechanical failures on their planes.

7.   Police say mechanical failure has not yet been ruled out.

8.   Police investigating the accident in which Leslie Crowther was critically injured have ruled out a mechanical failure as a possible cause.

9.   It is an insurance contract which covers a number of items against mechanical failure.