Delta Air Lines and the FAA are investigating an incident in which the engine tail cone came off a Delta Boeing 777-200ER during a flight on5 November.
The airport departed New York JFK airport for Tokyo at 13:00 local time and the engine tail cone landed in a residential yard in Long Island, New York, a Delta spokesman says.
The aircraft arrived in Tokyo and the airline installed a new tail cone during its 13-hour layover. The aircraft will return to the US during its regularly scheduled flight on 7 November, the spokesman says.
An FAA spokeswoman says she expects the part fell off shortly after takeoff due to the location of where the part landed.
No one was harmed and the National Transportation Safety Board (NTSB) is not investigating the matter, but is monitoring the situation, an NTSB spokeswoman says.