Non-U.S. registered business jets were involved in one fewer accident in 2012 (10) and turboprops were involved in 40 accidents, down from 44 in 2011.

Likewise, incidents involving non-U.S. registered business aircraft were down: incidents involving jets dropped from 11 in 2011 to six last year and turboprops from 13 to 10.

Fatal accidents also declined from four in 2011 to two involving the business jet fleet. But non-U.S.-registered business turboprop were involved in more fatal accidents last year (18) than in 2011 (16). The majority of the fatal accidents came in the commuter/air taxi segment.

As for helicopters, U.S. twin-turbine helicopter accidents jumped from six in 2011 to 16 last year, including three fatal accidents with seven fatalities. Single-turbine helicopters were involved in 57 accidents last year – up from 50 a year earlier.

But outside the U.S., twin-turbine helicopter accidents dropped from 33 in 2011 to 19 last year. Likewise, single-turbine helicopters were involved in 94 accidents last year, down from 108 a year earlier, according to preliminary Breiling data.

Breiling complies business aircraft and helicopter accident data worldwide and publishes the information in its Annual Business Turbine Accident Review.