Russia's S7 Group has been confirmed as the first potential customer for a shrink version of the Sukhoi Superjet 100.
FlightGlobal had previously revealed that S7 Group had been working on technical requirements for the 75-seat aircraft – tentatively named the Superjet 75 or SSJ75.
Sukhoi's civil aircraft division says that S7 Group, which includes S7 Airlines, has signed a letter of intent covering the prospective delivery of 50 aircraft with an option on 25 more.
The preliminary agreement was reached at the Eurasia air show in Antalya, and will be negotiated further over the summer.
Sukhoi states that the deliveries would commence around 2022. "In that case, S7 is to be the launch customer of the new modification," it adds.
S7 will participate in a supervisory council which is being created to support development of the new aircraft.
"We hope that our collaboration will result in a competitive, efficient aircraft relevant for the market," says Sukhoi Civil Aircraft president Alexander Rubtsov.