American Airlines doesn't think the unions that represent its mechanics are doing enough to comply with a judge's temporary restraining order, the airline said in a Wednesday court filing. "The data is clear," American said in the filing. "The numbers are getting worse, not better." Minimum equipment lists, or MELs, represent aircraft tagged for maintenance work that doesn't affect the airworthiness of the plane, allowing the issue to be fixed at a later time when the plane won't be in use.