SAO JOSE DOS CAMPOS, Brazil, June 19 (Reuters) -

B erkshire Hathaway's NetJets has started to convert its

options for the purchase of up to 250 Praetor 500 business jets

from Embraer ( ERJ ) into firm orders, an executive at the

Brazilian planemaker said on Wednesday.

The first five options have been converted into orders this

year, with deliveries expected to start in 2025, the market and

product intelligence director of Embraer's ( ERJ ) executive jets unit,

Alvadi Serpa Junior, told reporters at the company's

headquarters.

"As we move forward, we should expect to see more of these

orders," Serpa Junior said.