The US Federal Aviation Administration (FAA) has cleared grounded Boeing 737 Max 9 jets for flying again after inspections.

FAA has ordered Boeing to halt production-rate increases for the 737 Max until quality control issues are resolved.

In-house safety inspections revealed loose bolts on Alaska Airlines' fleet of Boeing 737 Max 9s, leading to an ongoing investigation.

Alaska and United Airlines have had to cancel hundreds of flights due to the grounding, resulting in potential losses.

The FAA will not allow expansion of production for the Boeing 737 Max models until quality control concerns are addressed.

Boeing has pledged to comply with safety and quality improvement measures.

The NTSB has opened an investigation into incidents where doors detached during flights, and longer in-flight recordings have been called for.

The FAA has implemented a maintenance and inspection program for the grounded Boeing 737 Max 9 aircraft in the US.

The production freeze could cause delays in deliveries, impact suppliers, and hinder Boeing's competition with Airbus.

Boeing 737 Max 9 will resume carrying passengers this weekend in the US after being grounded due to safety concerns.

FAA has outlined a new inspection and repair process for the planes' door plugs.

FAA is investigating Boeing's safety procedures and have limited the company's production of Max planes due to quality control concerns.