Earhart disappeared over the central Pacific on 2 July 1937 during her round-the-world flight attempt; no confirmed wreckage or remains have ever been recovered. She was declared dead in absentia on 5 January 1939, a legal date, not an evidentiary one.
What would resolve this Confirmed physical identification of wreckage or remains from her Lockheed Electra 10E, tied to a specific date and location, accepted by the aviation-history and forensic community.
OpenWikipedia: Amelia Earhart