The FAA has issued an Emergency Airworthiness Directive requiring inspections of all MD-11F and MD-11 aircraft due to safety concerns following the fatal crash of UPS Flight 2976, which resulted in at least 14 fatalities. The directive prohibits further flights until inspections and corrective actions are completed. UPS and FedEx have grounded their fleets as a precaution, while Boeing advised all MD-11 operators to suspend flights for further analysis. The NTSB is investigating, focusing on recordings from the flight and examining the detached engine components.

Source: https://www.stattimes.com/air-cargo/faa-mandates-md-11-inspections-after-deadly-ups-crash-1357070