Bombardier still stands behind a goal to deliver at least 20 CSeries aircraft in 2017, but reaching the target would require the Montreal-based airframer to deliver six aircraft in less than three weeks.
The company started 2017 with a goal to deliver 30 to 35 CSeries this year, but revised the range downward, to 20 to 22 aircraft, on 2 November.
On that date, Bombardier had delivered 13 CSeries in the year. The company has handed over just one CSeries since then, for a total of 14 in 2017 as of 11 December, according to Flight Fleets Analyzer.
Bombardier will need to deliver about three aircraft weekly through the end of December to reach 20 aircraft for the year.
"We still expect to meet our revised guidance, which is 20-22 aircraft," Bombardier tells FlightGlobal.
Bombardier does not provide additional information about its ability to meet the goal, but the company could provide an update at its annual investor day on 14 December.
The company's slow 2017 delivery pace reflects Pratt & Whitney's delays in delivering the CSeries' PW1500G geared turbofans, executives have said.
P&W attributed its delays to unexpected challenges in production of the engines' titanium-aluminium fan blades.
The year's delivery pace started slow for the company, which handed over its first CSeries of the year on 3 March – a CS100 to Swiss, Fleets Analyzer shows.
Deliveries continued through the rest of 2017 at a rate of several aircraft monthly, the database shows.
Bombardier's 14 deliveries to date include three CS100s and six CS300s to Swiss, and five CS300s to Air Baltic.