More airplane engines recalled for bad parts, expanding earlier recall

US aviation regulators are expanding an earlier order to replace faulty parts in certain CFM International LEAP-1B engines. This means more airlines will have to ground planes to replace specific turbine disks and compressor spools.

Airlines have to pull planes out of service to fix them. This costs money and disrupts schedules. The problem is that the engine parts were made with material that might have iron mixed in, which makes them weaker. This is the second time regulators have expanded the recall for these specific engines, which means the problem is more widespread than first thought.