TORONTO – Bombardier Aerospace is extending its relationship with Horizon Air Industries Inc. of Seattle after the airline ordered one Q400 NextGen turboprop airliner, worth US$32.6 million, and signed a five-year heavy maintenance agreement.

Bombardier (TSX:BBD.B) will oversee maintenance of the airline’s existing 52 Q400 aircraft at its facility in Tucson, Ariz, the company said in an announcement on Tuesday.

Horizon Air, a subsidiary of Alaska Air Group, already has an agreement with Bombardier for the option of another seven Q400 NextGen aircraft.

“We’re thrilled that Horizon Air, a well-regarded regional airline and our long-term customer of almost 30 years, continues to look to Bombardier for its regional aircraft solutions,” said Mike Arcamone, president of Bombardier’s commercial aircraft division.

With the Farnborough International Airshow underway in Britain, manufacturers are announcing pacts alongside many of the world’s airlines.

Since last week, Bombardier has unveiled 24 new orders for its new CSeries jets valued at more than US$1.5 billion, though the aircraft is grounded because of an engine problem and test flights have been halted.

Bombardier, Canada’s largest aerospace company and one of the world’s top producers of aircraft for commercial airlines and the business sector.