"[C]ompanies owned and managed by the Mellon Group (owners of Guilford Transportation) have repeatedly transferred work from unionized to nonunion groups to avoid their collective bargaining obligations under the RLA (Railway Labor Act), repeatedly discharged pilots because they were unwilling to fly in violation of FAA safety rules, repeatedly refused to comply with final and binding decisions of system boards of adjustment as required under the RLA, and willfully violated environmental laws." Source: Part of a legal filing by the ALPA, accusing the Mellon Group of shutting down subsidiary Pan Am and transferring the work to another subsidiary, Boston-Maine Airways, in order to sidestep the union.