Embraer gets Chile backing for military plane

* Embraer says gets Chile backing for military plane

* Chile agreement includes possible order for six planes

SAO PAULO, Aug 24 (Reuters) - Brazilian aircraft maker Embraer EMBR3.SAERJ.N signed an agreement with Chile's government on Tuesday to help develop a military transport plane, as it seeks to diversify from its core market of regional commercial jets.

As part of the deal, Chile’s state-run Empresa Nacional de Aeronautica, or Enaer, started talks with Embraer, the world’s third-largest jet maker, to help develop the KC-390 cargo plane, the Brazilian company said in a statement.

Chile’s Air Force also started discussions over the purchase of six KC-390s, Embraer said, without giving the potential size of the order.

The deal was the second in about one month for Embraer’s military transport plane, after the company and Brazil’s Air Force signed an agreement for 28 KC-390s, which has a cargo capacity of 23.6 tons.

Embraer has said it plans test flights for the cargo plane starting in 2014, with the plane entering full operation by the end of 2015.

The company got about 13 percent of its revenue in the second quarter from the defense segment and 61 percent from commercial planes.

Embraer shares tumbled 2.4 percent to 10.58 reais in mid-afternoon trading in Sao Paulo, compared with a 1 percent decline in the benchmark Bovespa .BVSP index. (Reporting by Elzio Barreto; editing by Gunna Dickson)