National Transportation Safety Board inspectors said the main fuel supply line to an engine had become disconnected prior to a plane fire at Fort Lauderdale last week.
The fuel line’s coupling assembly came loose near the left engine of the Dynamic Airways plane which burst into flames on a taxiway.
One expert, Chuck Horning, chairman of Aviation Maintenance Science at Embry-Riddle Aeronautical University, said the problem may have been caused by previous maintenance work.
"It’s not one of those things that is generally an issue. The first thing I would want to look at is get a complete picture of the maintenance done in that area," Horning said.
"You’d want to go back and see what other kinds of maintenance was done in the past."
After the jet burst into flames, passengers evacuated by sliding down chutes, with one suffering serious injuries.
The NTSB said Dynamic had only flown the plane for 240 hours prior to incident after leasing it in September.
