GIGLIO ISLAND, Italy (AP) — The former captain of a luxury cruise liner that capsized off an Italian island had gone back aboard for the first time since the 2012 shipwreck that killed 32 people.

Francesco Schettino, who is on trial accused of manslaughter and abandoning ship, was allowed to board the Costa Concordia Thursday to help court-appointed experts inspect generators.

Schettino donned a life vest before taking a boat to the wreck, which was set upright in a daring engineering feat last year. Schettino, the sole defendant, claims that faulty generators and a poorly trained crew contributed to tragedy. The inspection was requested by defense and lawyers for consumer groups, which contend that Costa Crociere Spa, the cruise company, shares some blame.

Prosecutors contend Schettino deserves all the blame.