Safety and Operational Impact - FedEx and UPS grounded dozens of MD11s following a deadly cargo plane crash in Louisville, Kentucky [1] - Boeing recommended the grounding as a precaution, and the FAA issued an emergency airworthiness directive requiring inspections before the planes could fly again [1] - UPS issued an immediate grounding order to its pilots [1] - The grounding of cargo planes raises concerns about potential disruptions to the holiday shipping season [4] Investigation and Response - The NTSB is investigating the cause of the crash, with assistance from UPS and the pilot union [2] - The investigation is expected to take up to a year to determine the cause of the crash [2] - A UPS spokesperson emphasized the company's commitment to the safety of employees and the communities it serves [1] Incident Details - The plane's left engine caught fire and detached during takeoff, resulting in 14 fatalities, including three crew members and others on the ground [3]