BOSTON (AP) _ Federal investigators on Tuesday inspected a Sabena Airlines DC-10 jet that took a sudden dive in turbulent weather, injuring a dozen people.

Sabena Flight 534 was about halfway between Detroit and Logan International Airport on Monday when it plunged as dinner was being served, said Helen Kahn, a spokeswoman for the Belgium-based company.

Officials said they did not know how far the plane fell. ''It was not too much,'' said Sabena spokesman Willie Goderis, who, along with other airline officials, declined to identify the pilot.

The sudden drop sent food trays flying and slammed some aboard into the ceiling, passengers said.

Clarice Bishop, 67, of Cleveland, said she felt like she had ''one big hangover'' when she woke up Tuesday.

''If the (ceiling) paneling hadn't given, we would have been more seriously injured,'' she said.

The flight had been very calm until the plane was hit with one massive jolt, said Mrs. Bishop, who was part of a group from St. John's Episcopal Church in Royal Oak, Mich., headed for a European vacation.

''(It went) right back to normal.'' she said. ''Nobody cried out ... (and) the crew was just all under control.''

The plane, with 70 passengers and eight crew members aboard, landed at Logan without further incident at 7:09 p.m., a scheduled stop on its trip to Belgium.

One stewardess and 11 passengers were treated at hospitals in the area for bruises, cuts and back injuries. All were later released.

Federal Aviation Administration officials planned to help National Transportation Safety Board inspector Vincent Marcantelli review the airliner, said FAA spokesman Michael Ciccarelli. Marcantelli told Sabena officials to keep the plane at Logan and ''don't do a thing to it until he had a chance to look over the airplane totally,'' according to Ciccarelli.

Goderis said passengers were rerouted to Europe on different airlines after being put up in local hotels overnight.