UPS and FedEx announced they grounded all of their MD-11 cargo planes after a deadly crash in Kentucky .

UPS said in a Nov. 7 statement it would temporarily ground the MD-11 fleet effective immediately. The decision comes after the Nov. 4 crash of a UPS cargo flight in Louisville, where at least 14 people died , including three crew members, and others are still missing as of Nov. 7. It’s the deadliest crash in UPS Airlines history.

“Out of an abundance of caution and in the interest of safety, we have made the decision to temporarily ground our MD-11 fleet,” the company said. The decision affects about 9% of the UPS Airlines fleet, the company said.

In a Nov. 8 email, a FedEx statement said the company also grounded its MD-11 fleet, citing it had done so out of an abundance of

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