Connecticut-based aerospace company Pratt & Whitney says it is cooperating in the investigation following the explosion of a United Airlines Boeing 777's engine.

The company released a statement that reads, "Pratt & Whitney is actively coordinating with operators and regulators to support the revised inspection interval of the Pratt & Whitney PW4000 engines that power Boeing 777 aircraft. Pratt & Whitney will continue to work to ensure the safe operation of the fleet."

United has pulled its two dozen Boeing 777s with the same type of engine.

There were 231 passengers on board the plane as the engine failed and caught on fire. The plane made an emergency landing at Denver International Airport as debris was scattered across a residential neighborhood.

No one was hurt in the incident.