Boeing CFO warns that a strike could endanger the company's recovery and negatively impact aircraft production.

• The length of the strike will determine the financial impact on the company, as stated by Chief Financial Officer Brian West, who added that it will affect the production of the company's top-selling aircraft.
• On Friday night, Boeing workers rejected a proposed labor agreement and went on strike.
• The plane-maker has been facing numerous issues, which may lead to potential production disruption.

Brian West, CFO, stated that the labor strike that started on Friday will negatively impact aircraft deliveries and potentially threaten the company's recovery, just hours after factory workers rejected a new labor contract.

West stated that the length of the strike will determine the financial impact on the company, but it will affect the production of its top-selling planes. During a conference on Friday, West refused to confirm if the company could achieve a production rate of 38 737 Max planes per month by the end of the year.

Boeing could suffer a $1.5 billion loss if a 30-day strike occurs, according to Sheila Kahyaoglu, an aerospace analyst at Jefferies.

Boeing's immediate priority will be to conserve cash, and new CEO Kelly Ortberg will be working to repair relationships with the union, according to West.

On Sunday, Boeing and the International Association of Machinists and Aerospace Workers announced a preliminary labor agreement that included 25% wage increases over four years and enhancements to healthcare and retirement benefits. However, workers had been seeking raises of 40% and contended that the agreement did not adequately address the rising cost of living.

In the Seattle and Oregon areas, workers rejected the proposal by 94.6% and voted in favor of a strike by 96%.

They walked off the job after midnight on Friday.

Nearly two months elapsed since the last Boeing machinists' strike in 2008.

The manufacturer has been facing a series of challenges, including difficulties in increasing production and restoring its reputation after safety crises, which may lead to potential production disruptions.

In January, a door plug blowout on a nearly new Boeing 737 Max 9 resulted in the Federal Aviation Administration barring Boeing from increasing output of its Max planes and increasing inspections at production plants until the regulator is satisfied with its safety and quality procedures.

On Friday, a Boeing spokesperson informed CNBC that the company will maintain its inspectors at FAA facilities during the strike.