Air Nostrum is to be the customer receiving the 1,000th ATR turboprop at an event next week in Toulouse.
The Spanish regional carrier will be handed an ATR 72-600 aircraft on 3 May, according to a source familiar with the situation.
Air Nostrum placed a firm order for 10 in 2009 along with 10 options for the type.
It took delivery of its first ATR 72-600 on 26 April and has four more of the type scheduled for delivery through August.
Air Nostrum's remaining five ATR 72-600s are scheduled for 2013.