The wrecked Makani Kai plane that crashed into waters off Kalaupapa, Molokai on Dec. 11 is now being inspected at Honolulu Harbor.
After a 9-hour recovery in seas of five feet, a salvage team recovered most of the aircraft from a depth of 70-75 feet.
Honolulu-based company Sea Engineering delivered the Cessna prop plane to National Transportation Safety officials Thursday morning at pier 29.
The engine was in "remarkably" good condition. It has been sent to Pratt and Whitney Canada in Montreal where it be dismantled and thoroughly examined by the manufacturer.
The rest of the wreckage is staying on Oahu in a secure location for access by the NTSB's Hawaii-based based investigator.
The NTSB says the engine is a similar model, made by the same company, to the one involved in the Oct. 21 emergency landing of a Mokulele Airlines plane.
During that incident a Cessna 208-B plane landed onto Piilani Highway in Maui while on its way to the Big Island.
During both incidents, the crew reported hearing a loud bang just before the engine lost power.
The NTSB expects to have a preliminary report within the next few weeks.
Meanwhile they have been interviewing passengers aboard the Makani Kai flight as part of their investigation.