Disappearance of Amelia Earhart

Case summary

On 2 July 1937, Amelia Earhart and navigator Fred Noonan vanished in their Lockheed Electra on the Lae–Howland leg of a round-the-world flight. The largest US Navy search of its era found no trace. The crash-and-sink, Nikumaroro landing and other hypotheses are still being tested with sonar surveys and archival radio logs.

Timeline

1. 1937-07-02Departure from Lae; the cutter Itasca logged fading radio calls and the aircraft never reached Howland.
2. 1937-07-09Navy aircraft overflew Nikumaroro (Gardner) and reported no sign of life.
3. 1937-07-19The official search ended with a 'lost at sea' determination.
4. 1940-09A partial skeleton was found on Nikumaroro; the 1941 measurements later became disputed.
5. 2018-03Richard Jantz's anthropometric analysis argued the bones were consistent with Earhart.
6. 2024-01Deep Sea Vision announced a plane-like sonar contact; follow-up review showed a rock formation.

People and connections

• Amelia EarhartPerson

  Pilot; first woman to fly the Atlantic solo.

• Fred NoonanPerson

  Navigator; among those who charted Pan Am's Pacific routes.

• USCGC ItascaObject

  The cutter stationed off Howland; source of the final radio logs.

• TIGHAROrganisation

  Research group advancing the Nikumaroro hypothesis.

• USCGC Itasca to Amelia EarhartLast confirmed radio contact (07:42 and 08:43 logs)
• TIGHAR to Fred NoonanAttribution of Nikumaroro artefacts to the crew is disputed

Findings

Every finding lists its source and date. Interpretation stays in the researcher's note.

• The aircraft never reached Howland; Itasca radio logs document fuel and visibility trouble.

  VerifiedSource: Itasca deck logs1937-07

• The simplest 'crash and sink' hypothesis remains unproven because no wreckage has been found.

  ProbableSource: US Navy search report1937

• Nikumaroro bone measurements produced opposite conclusions in two analyses (1941 Hoodless vs 2018 Jantz).

  ContestedSource: Forensic Anthropology journal2018-03

• Claims of Japanese capture or survival have never been verified by any primary document.

  UnverifiedSource: National Archives review2026-04

Documents

• DocumentItasca radio logThe official minute-by-minute record of the final messages.
• PhotographLae departure photographsThe last known frames of the Electra, morning of 2 July 1937.
• MapSearch area and hypothesis mapThe Howland line, Nikumaroro and sonar survey boxes.

Sources

1. 01

   Disappearance of Amelia Earhart

   Wikipedia, 2026, Encyclopedia entry

   Open source
2. 02

   Amelia Earhart Search Records

   US National Archives, 1937, Official archive

   Open source
3. 03

   The Earhart Project

   TIGHAR, 2026, Research project archive

   Open source
4. 04

   Amelia Earhart plane search: sonar image

   BBC News, 2024, News verification

   Open source

Locations

• Howland Island0.81°, -176.62°
• Nikumaroro-4.68°, -174.52°
• Lae, Papua New Guinea (departure)-6.73°, 147.00°

Researcher's note

Interpretation: after nearly 90 years all three hypotheses still await evidence. The lesson for researchers is that a lead such as a sonar contact does not count as a result without independent verification. The 2024 survey is a current example.