Aerolineas Argentinas has agreed to lease 11 737-800's from three different sources for delivery over the next three years bringing its total fleet of the type to 15 examples.
The largest contract is with Air Lease Corporation for six new 737-800's to be handed over between November 2014 and February 2016 on 12-year leases.
Additionally, four new 737-800's leased from CIT Aerospace are due for delivery starting in January 2014.
One more 737-800, an ex-Air Berlin example, is due to be delivered by AWAS in November of this year.
World Airline News 11Apr13: http://worldairlinenews.com/2013/04/11/air-lease-corporation-announces-the-placement-of-six-new-boeing-737-800s-with-aerolineas-argentinas/
Aviacion News 23May13 & 13Jun13: