Australia's Eurocopter Tiger armed reconnaissance helicopters have been returned to regular training flights following the lifting of a two-week suspension.
The Army Operational Airworthiness Authority lifted the restrictions "following a detailed assessment and a recommendation from the Technical Airworthiness Authority to resume flying operations", says Australia's Department of Defence.
© Commonwealth of Australia
The helicopters had been grounded since 16 May, after fumes were detected in the cockpit of one of the aircraft.
Australia's army has 22 Tigers, of which 19 are in a "fully capable configuration". The remaining three are being retrofitted to raise them to the same standard, the DoD says, and will return to the fleet later this year.
The type has yet to become fully operational in Australian service. Final testing of the type is planned for late 2012.