EVERETT, Wash. – Boeing has stopped deliveries of its 787 passenger jet again after questions emerged about part of the fuselage near the front of the plane.

The company says it does not raise an immediate safety issue for planes already in service.

The Federal Aviation Administration was more cautious, saying it is working with Boeing to determine what fixes might be needed for planes recently delivered to airlines.

The discovery is the latest setback Boeing’s Dreamliner.

Deliveries were stopped for more than a year before they resumed last August while Boeing fixed production flaws including the fit of panels on the carbon-composite skin.