Three-quarters of the globe behind them, Amelia Earhart and her navigator, Fred Noonan, now had only the Pacific Ocean left to cross. They took off midmorning from Lae, Papua New Guinea, on July 1, 1937, bound for Howland Island, an 8,200-foot-long, paramecium-shaped speck halfway to Honolulu. A runway had been carved out on the uninhabited island for their use. Fuel awaited them, and the US Coast Guard cutter Itasca stood by with radio-direction-finding equipment. Earhart would navigate by pilotage and dead reckoning until nightfall; they would then rely on Noonan’s celestial navigation until the sun rose an hour before their anticipated arrival. Thereafter, Earhart would dead-reckon again.
Amelia Earhart’s Final Flight
Key Takeaways:
- A 1999 Caltech study re-evaluated Amelia Earhart's final flight, concluding her Lockheed Electra had a significantly shorter fuel duration (20-21 hours) than the commonly assumed 24 hours.
- This reduced fuel capacity was primarily due to high tropical temperatures at takeoff affecting fuel density and the original range calculations not accounting for altitude's effect on fuel consumption.
- A persistent 26 mph headwind further increased the effective flight distance, pushing the journey beyond the aircraft's realistic range and making it highly probable they ran out of fuel near Howland or Baker Island.
- Compounded by navigational precision challenges and difficulties with radio communication, the research supports the prosaic explanation that Earhart and Noonan failed to find the tiny island, ran out of fuel, and were lost in the Pacific.
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