1.  Another criminal case that began unfolding in San Francisco three years ago and led investigators across the country shows just how hazardous bogus parts can be.

2.  Boeing helped in the investigation with its own team assigned to deal with the problem of bogus parts, said Boeing spokesman Steve Miller.

3.  Caven indicated that at least a dozen other companies, including some in Washington, California and Florida, bought bogus parts from Precision Grinding.

4.  One company involved may have sold hundreds of bogus parts over a decade, according to court documents.

5.  Several witnesses said that the agency had not been aggressive in looking for bogus parts.

6.  The bogus parts problem extends to the FAA itself.

7.  The FAA says bogus parts are a concern, but not a major safety issue.

8.  The landing gear had bogus parts in it.

9.  A man convicted of supplying bogus parts for a helicopter involved in a fatal crash was jailed for three years Thursday for manslaughter.

10.  Bogus parts often come from outside the United States.