Turboprop maker ATR says it more than tripled the number of firm orders in calendar 2017 as it broadened its global footprint around the world.

The company said it secured firm orders for 113 aircraft in the 12 months to December 31 2017, up from 36 firm orders in the prior corresponding period.

“In 2017, the ATR turboprops once again ranked first among all the sales of regional aircraft below 90 seats,” ATR said in a statement.

The big increase from the prior year was underpinned by India-based IndiGo’s order for 50 ATR 72-600s. Other significant orders included global logistics company FedEx (30 ATR 72-600Fs) and Iran Air (10 ATR 72-600s).

The 2017 results also highlighted the geographic diversity in ATR’s order book, which features orders from airlines in the Bahamas, France, Japan, Senegal and Taiwan.

“In 2017, ATR has sold aircraft in every region of the world and in particular has invested substantially in growing markets,” the company said.

“In the last year, ATR has developed its support capabilities with the introduction of two new training simulators, while two additional simulators will be introduced soon.”

Meanwhile, ATR said it delivered 80 aircraft in 2017, comprising 70 ATR 72-600s, eight 42-600s and two second hand aircraft. This represented a book-to-bill ratio of 1.45.

Based in Toulouse, France, ATR is jointly held by Airbus and and Leonardo.