(Reuters) – U.S. regional airline Republic Airways signed a letter of intent to buy 100 E175 passenger jets made by Brazil’s Embraer SA (EMBR3.SA), the two companies said at the Farnborough Airshow on Tuesday.

Republic said the deal would include an option to convert to Embraer’s latest E175-E2 aircraft, with purchase rights for an additional 100 E175 aircraft.

The contract has a value of up to $9.3 billion based at current list prices if all purchase rights are exercised, the airline said.

Swiss airline Helvetic Airways ordered 12 E190-E2 passenger jets, with options to buy another dozen of the same aircraft or convert to the longer E195-E2 aircraft.

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