Russian regional carrier Yamal Airlines will not take the last of 10 Sukhoi Superjet 100s (SSJ100s) from an order of 25, Yamal CEO Vassily Kryuk reportedly told the Interfax newswire this week.

The decision was apparently made because of economic reasons, not the crash landing of Aeroflot’s SSJ100 at Moscow Sheremetyevo May 5 that killed 41 people.

Yamal signed a lease agreement for 25 Superjets through the state-owned GTLK leasing company in 2015. The airline’s fleet includes 15 of the type, in a two-class configuration with eight seats in business and 90 in economy class.

GTLK confirmed the airline refused the last 10 aircraft, but specified the decision was made last year as the operator “couldn’t forecast payload for these aircraft in the next years.” The lessor said it had no firm order for the last 10 aircraft for Yamal.

“Expenses for continued airworthiness don’t allow us to expand the [Superjet] fleet,” Kryuk explained to Interfax.

Yamal has operated Superjets since 2016, which replace its aging Boeing 737 Classics. Besides SSJs, the carrier operates eight Airbus A320-200s, three A321s and 10 Bombardier CRJ200LRs.

Yamal is based in Salekhard, a capital of Yamalo-Nenets Autonomous Okrug, a region on the Northern Urals. It operates a number of regional fights across Russia.

The regional airline carried 1.97 million passengers in 2018, up 10% year-over-year, ranking the 12th among the country’s largest carriers.

Yamal is the second-largest SSJ operator in Russia behind Aeroflot, which has 49 of the type. Other Russian SSJ operators include Gazpromavia (10), IrAero (9), Azimuth Airline (9) and Yakutia (4).

Some Superjets are also operated by Russian government bodies.