Alcohol abuse by airline pilots poses a potential danger to the safety
and welfare of the flying public. This paper analyzes two strategies
for reducing pilot-error aviation accidents: conducting background che
cks on pilots for driving-while-intoxicated (DWI) convictions and rand
om preflight alcohol testing of airline pilots. Although both policies
have been implemented, no empirical research had previously been cond
ucted to justify either strategy. The results and conclusions of this
study are based on analysis of data obtained from the Federal Aviation
Administration on the flying performance of 70 164 airline pilots. DW
I convictions were found to be associated with a significantly greater
risk of a pilot-error accident. In contrast, no evidence was found to
validate the assumption that a random alcohol testing program could h
ave prevented accidents. The results provide support for improving the
existing DWI background check program and for reducing the sampling r
ate of random alcohol testing for airline pilots. This twofold strateg
y could result in greater improvements in aviation safety and reduced
overall costs.