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 risk: aircraft flight hours and departures. Airclaims Limited defines a total loss as an aircraft that has been destroyed or for which the estimated repair costs rendered the aircraft a total loss under the terms of the insurance contract. (Airclaims Limited notes that some airplanes that became total losses were repaired and returned to service.) Any total loss that resulted from a deliberate violent act was eliminated from the Board's comparison. The results of the comparison are shown in table 3.

Table 3. Loss totals and rates for the 10-year period ending December 31, 1998, by losses per 1 million departures.

As table 3 indicates, eight of the operators had fewer than one hull loss per 1 million flight hours (All Nippon Airways, Singapore Airlines, Japan Airlines, Northwest Airlines, United Airlines, US Airways, Delta Air Lines, and American Airlines). Asiana Airlines had 1.25 hull losses per 1 million flight hours, Korean Air had 2.38, and China Airlines had 4.59.

Seven operators in the comparison group had fewer that one hull loss per 1 million departures (All Nippon Airways, Japan Airlines, Northwest Airlines, United Airlines, US Airways, Delta Air Lines, and American Airlines). Two operators had between one and two hull losses per 1 million departures (Singapore Airlines and Asiana Airlines). Korean Air Lines had 4.79 hull losses per 1 million departures, and China Airlines had 11.74.