Some GE jet engines must replace key parts due to manufacturing flaws

The US aviation regulator is ordering the replacement of specific parts in certain General Electric jet engines. This is because some high-pressure turbine disks were made with metal suspected to contain iron impurities.

When a manufacturer finds a flaw in a critical part, it triggers a cascade of inspections and replacements. This proposed rule means airlines operating these specific GE engines will need to ground planes to replace the affected turbine disks. This is a routine but costly part of maintaining air safety.