11.   The company that owns the ship, the Spirit of New York, attributed the crash to mechanical failure, but did not elaborate.

12.   The first crash was attributed to pilot error.

13.   The Indiana crash was later attributed to ice that built up on the plane while it was in a holding pattern.

14.   The Safety Board attributed the crash to pilot errors and a faulty weather instrument on the ground.

15.   Two crashes were attributed to pilot error, which raised questions about the culture of China Airlines.

16.   Castillo Fernandez attributed the crash to pilot error.

17.   The air force attributed the crash to mechanical problems.

18.   That crash was attributed to pilot error.

19.   The crash was attributed to pilot error compounded by deteriorating weather conditions.