Mechanical failures and fuel management cause small percentage of accidents Mechanical and maintenance issues accounted for 15 percent of all accidents, with just under half attributable to engine or propeller problems. Fuel management issues were blamed in 3.9 percent of all general aviation accidents, but accounted for only 1.6 percent of fatal accidents. ASF is developing a safety program addressing fuel management, expected to debut in late 2001. Only two accidents in 1999 were attributed to fuel contamination. We've conducted more than 1,000 free seminars and given away thousands of videotapes and Safety Advisors.
Critical information is highlighted in yellow.
Statistics and graphs clearly portray safety data and trends. More than 80 percent of 1999 accident data used in the 2000 Nall Report was final by the time of publication, with some preliminary reports used for completeness. A comparison between preliminary reports used in the 1999 Nall Report and final reports issued late last year showed only minor changes in percentages, and no change in relationships between categories. The report honors former National Transportation Safety Board member Joseph T. Nall, a general aviation pilot, flight instructor and ground-school operator. Nall was killed in a Venezuelan air crash during an NTSB inspection visit there in 1989.