Holden acknowledged that 41% of union members voted to reject the deal, and vowed to press for better terms with the next contract in 2028.

In July, an incendiary device exploded in a container due to be loaded on to a DHL cargo plane in each of three U.K. and EU locations.

Elon Musk and other conservative activists blame some of the planemaker's problems with aircraft quality on its decision to add diversity goals to its bonus targets in 2022.

The union had previously called for a 40% pay increase and workers have rejected two previous offers.

Regulations, customer expectations, and companies’ sustainability objectives will be the driving force for CO2 emissions tracking and reporting. Discover more about the importance of sustainable transportation practices and how to meet the ever-evolving requirements.

While Boeing’s latest 35% pay offer was a bump from its initial 25% increase, workers are still angered by the failure to reinstate their defined-benefit pension plan.  

A tentative deal between Boeing and the union doesn’t guarantee that workers will also fall in line.

Boeing is in the process of buying back Spirit after an ill-fated separation almost two decades ago.

In September, the National Transportation Safety Board issued an “urgent” recommendation to the FAA about a problem with rudders that pilots use to steer certain Boeing 737s after landing.

Boeing has already initiated a range of cost-cutting plans as it grapples with dwindling reserves and low output.