31.   Sindelar said that causes of the crash are still unclear but did not rule out technical failure.

32.   Sindelar said that the causes of the crash are still unclear but did not rule out technical failure.

33.   So far this season, Schumacher has dropped out only once because of technical failure, last month in Hungary.

34.   Technical failure was the cause given in a terse statement from the army general command carried Friday by the official Sudan News Agency.

35.   The daily El Sol de Morelia said the pilot was badly damaged in the accident, blamed on an unspecified technical failure.

36.   The helicopter, which was on a training flight, apparently went down because of technical failure, said Col. Kemal Ay, spokesman for the chief of staff.

37.   The military had earlier said the helicopters crashed due to technical failure.

38.   The military official said the Royal Air Force plane reported a technical failure before it crashed, killing all on board.

39.   The Turkish military has acknowledge the loss one of copter, a U.S.-made Cobra, but blamed the loss on technical failure.

40.   U.S. Federal Aviation Administrator Jane Garvey told a news conference that the ICAO security audits would be similar to safety audits already conducted successfully to prevent technical failure.