March 19 (Reuters) - The National Transportation Safety

Board said on Thursday it is investigating a close call in which

an Alaska Airlines flight overflew a FedEx ( FDX ) airplane

while both jets were attempting to land on crossing runways at

Newark Liberty International Airport.

The Federal Aviation Administration said an air traffic

controller around 8:15 p.m. Tuesday instructed Alaska Flight 294

, a Boeing 737, to perform a go-around because FedEx

Flight 721, a Boeing 777, was cleared for the final approach to

an intersecting runway at the New Jersey airport near New York

City.