Therefore, establishing criteria for �critical lifts,� preparing formal lift plans, and utilizing lift planning checklists are important components in preventing mobile crane failures.
However, �people do not plan to fail, they fail to plan.� As a result, less-than-adequate mobile crane lift planning encompasses most, if not all, of the above causal factor categories. A separate study involving a review of 158 crane-related incidents from 1997 to 1999 identified the most frequent causes of mobile crane incidents to be instability (e.g., unsecured load, load capacity exceeded, ground not level or too soft, etc.), lack of communication, and electrical contract.
