FILE - An area near the Na Pali Coast on the island of Kauai in Hawaii is shown as seen from the air on Dec. 17, 2019. The National Transportation Safety Board released an investigation report Wednesday, Dec. 15, 2021 on the crash of a tour helicopter on Dec. 26, 2019 in the area that killed seven people, but the report did not detail a cause for the crash. (AP Photo/Maryclaire Dale, File)

HONOLULU — The National Transportation Safety Board released an investigation report Wednesday on a fatal Hawaii tour helicopter crash that killed seven people.