On Monday, firefighters were called to Logan Airport after smoke was detected in the cabin of a JAL Dreamliner 787 that was being readied for an afternoon flight. There were no passengers or flight crews on board at the time the smoke was detected.
The plane had recently arrived from Tokyo.
On Tuesday, a fuel leak was detected in another JAL 787 at Logan Airport. That 787 had 178 people on board when the fuel leak was detected. The jet was returned safely to the terminal.
Boeing shares, meanwhile, dropped $2.55, or 3.5 percent, to $73.58, the Houston Chronicle reported.
This week's problems are not new. Monday's fire occurred in the electrical equipment bay of the jet. In December, a fire in the same area broke out on a United Airlines 787 in mid-flight.
That jet, which was flying from Houston to Newark, N.J., made an emergency landing in New Orleans, the Chronicle reported.