United Flight Returns to Newark After Report of Smoke

NEWARK, N.J. (AP) -
FILE - In a May 1, 2015 file photo, a United Airlines employee walks near a jet parked at Terminal C of Newark Liberty International Airport as the sun rises behind the New York City skyline, in Newark, N.J. The Federal Aviation Administration announced Friday, April 1, 2016, that it is easing limits on the number of hourly flights at Newark Liberty International Airport, and the airport’s operator said that should lead to greater competition and lower fares.(AP Photo/Julio Cortez, File)
In this 2015 file photo, a United Airlines employee walks near a jet parked at Terminal C of Newark Liberty International Airport as the sun rises behind the New York City skyline, in Newark, N.J. (AP Photo/Julio Cortez, File)

A United Airlines jetliner bound for Boston returned to the gate at New Jersey’s Newark Liberty International Airport after reports of smoke coming from an engine.

United spokeswoman Mary Clark says Flight 1550, carrying 147 passengers and crew, was preparing for takeoff Tuesday morning.

The Boeing 737 was removed from service for a maintenance inspection and United substituted another aircraft for the flight to Boston.