The troubled relations between Eastern Air Lines...

The troubled relations between Eastern Air Lines and its unions spilled onto the pavement as an estimated 300 to 400 members of the International Assn. of Machinists staged a wildcat walkout. The protest at Eastern’s headquarters in Miami and at Miami International Airport followed the breakdown last week of 16 months of negotiations between Eastern, a unit of Houston-based Texas Air Corp., and the union, increasing the possibility of a strike early next month. According to union sources, the walkout was precipitated by company threats to dismiss cleaning and ramp personnel who refused to work overtime.