Talks between Boeing and some 33,000 striking employees in the Pacific Northwest have collapsed, with Boeing rescinding a 30% pay increase offer earlier this week. The International Association of Machinists and Aerospace Workers, which launched the strike nearly one month ago, is seeking a 40% pay raise and improved retirement benefits.

This comes as the Federal Aviation Administration this week issued a safety warning to airlines related to the rudders of some Boeing 737 airplanes. Meanwhile, The New York Times is reporting that Boeing declined a request by Ethiopia Airlines’ chief pilot to provide guidance on how to handle problems with the 737 MAX flight control system in the wake of 2018’s Lion Air crash in Indonesia. Three months after the denied request, an Ethiopia Airlines plane crashed from the same flawed flight control system, killing all 157 people on board.