![The ATR 72-600.](http://thewofa.com/wp-content/uploads/2011/06/ATR-72-600-series-in-flight-5-300x181.jpg)
US lessor Air Lease Corporation (ALC) has converted options it was holding for two ATR 72-600 turboprops into firm orders.
The options had been held as part of a larger order for 10 ATR 72-600s and 10 options ALC placed at the Farnborough Airshow in 2010, all of which the lessor says have been placed with customer airlines.