ABSTRACT
There are many potential local factors that can affect worker performance for good or ill. The International Civil Aviation Organization (ICAO) lists over 300 such influences ranging from heat and cold through to boredom, nutritional factors and even dental pain.1 Ultimately, however, experience shows that a relatively limited
Figure 5.1 Maintenance errors (central box) in the context of local error-producing factors (outer box)
number of local factors appear over and over again in maintenance accident and incident reports.
