The rare in-depth review was prompted by a rash of recent 787 incidents, including electrical faults in flight.

Officials also sought to reassure the traveling public about the plane’s safety as Boeing’s new jet continues to fly with 50 airplanes in service and more than 150 flights every day.

Secretary of Transportation Ray LaHood led a high-profile news conference in Washington, D.C., in which he was joined by new Federal Aviation Administration chief Michael Huerta and Boeing Commercial Airplanes Chief Executive Ray Conner.

“Maintaining the best and the safest aviation system in the world means going the extra mile when it comes to safety,” LaHood said. “We will look for the root causes of recent events and do everything we can to ensure these events don’t happen again.”

Huerta said the review will cover not only the jet’s design but also the manufacturing processes, down to the level of Boeing’s suppliers.

“We want to make sure the approved quality-control procedures are in place and that all the necessary oversight is done,” Huerta said.

“We are confident about the safety of this aircraft,” he said, “But we are concerned about these incidents and will conduct the review until we are completely satisfied.”

Boeing’s Conner said the company and the airlines flying the jet are satisfied that it is safe. Nonetheless, he added, “We welcome any opportunity to further reassure people outside the industry about the integrity of the airplane.”

All three reiterated several times their belief that the Dreamliner is safe to fly on.

Even when things have gone wrong recently — such as when an electrical-panel fault due to a defective circuit board caused a United Airlines jet out of Houston to divert to New Orleans in December — “the airplane performed exactly as designed” and the jet’s multiple redundant safety features ensured passengers were never at risk, said Conner.

LaHood said he “would have absolutely no reservation of boarding one of these planes and taking a flight.”