Figures from the Australian Transport Safety Bureau (ATSB) show Queensland is the worst state in the nation for aircraft fatalities.

The report reveals 117 people died in plane crashes in Queensland between 1999 and March this year.

Across the country, 344 people died in aviation accidents during the 10-year period.

But ATSB spokesman Stuart Godley says the number of deaths could be higher.

"CASA [Civil Aviation Safety Authority] register most aircraft in this country and their registrations start with VH, but some smaller aircraft that tend to be amateur-built are registered outside of CASA," he said.

"Those sort of aircraft aren't included in the ATSB's statistics, it's only the CASA-registered VH aircraft."

The report includes the May 2005 plane crash near Lockhart River in Queensland's far north.

Mr Godley says it was one of Australia's worst air crashes.

"That involved 15 fatalities including the pilots," he said.

In New South Wales, 84 people were killed in plane crashes over the same period.

The ACT recorded the lowest number, with two aviation fatalities in 10 years.