That crash was apparently caused by a mechanical flaw, and the report may revive criticism.

Rice had noticed some mechanical flaws in his stroke while studying game film the past few days and corrected them last night.

One mechanical flaw that limited the engine's power output involved a design mistake in the oil scavenging system.

U.S. investigators found no mechanical flaw with the aircraft, and human error was determined to be the cause.

If there is a mechanical flaw, he will fix it.

Maybe it's poor pitch selection, maybe some mechanical flaws, which we've been working on today.

"I don't know if it's a mechanical flaw or what," Wilson said.

For their part, American investigators have focused mainly on whether a mechanical flaw caused the crash.

Present troubles have to do with purely mechanical flaws.

Some scouts worried that mechanical flaws in his throwing motion might be too difficult to correct.