Investigators from the NTSB arrived at Newark Liberty International Airport on Monday after a near catastrophe over the weekend.
Several issues have led to delays and cancellations for about a week, and those disruptions were happening again Monday morning.
A man attempting to go through airport security was discovered to have been hiding a living turtle in his pants as he tried to sneak it onto the plane, authorities said.
Theresa Claiborne had her final flight with United Airlines on Thursday.
Several injuries were reported after a United Airlines flight from Tel Aviv to Newark International Airport was diverted to an airport in New York due to high winds.
The FAA is slowing traffic in and out of LaGuardia and Newark airports in New York due to the smoky conditions.