Notes: For air carriers, the data were smoothed, using an exponential smoothing model, with a weight of 0.94 to reduce the year-to-year fluctuations. For air carriers, fatalities resulting from the Sept. 11, 2001, terrorist attacks include only those persons onboard aircraft. 2002 data are preliminary.
Sources: Except as noted, various sources, as cited in U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS), National Transportation Statistics (NTS) 2002 (Washington, DC: 2002), chapter 2. Air carriers and general aviationUSDOT, BTS, NTS, available at http://www.bts.gov, tables 2-9 and 2-14.