What Prompted the Pacific Clipper's Unplanned Round-the-World Flight?

The attack on Pearl Harbor on December 7, 1941 shook not only the world, but also the air above it.

When the attack occurred, the Pan Am Boeing 314 Clipper flying boat then known as the California Clipper was aloft on a scheduled passenger service that had originated in San Francisco on December 2. Not wanting the state-of-the-art aircraft to fall into enemy hands, Pan Am ordered Captain Robert Ford and his crew to fly to New York, the long way around.

The only problem: they were 20,000 miles (32,000 km) away at the time, preparing to land in Auckland, New Zealand. After the passengers disembarked and the aircraft was stripped of all identifying markings, the Clipper flew west, on a route that was completely unfamiliar to the 10-person crew, and without the benefit of maps or radio contact.

Making 18 stops in 12 different countries along the way (including filling up with automobile-grade gasoline in Java because no aviation fuel was available), the California Clipper arrived at New York's LaGuardia Airport on January 6, 1942, after 209 flight hours. Other heart-racing moments had included dodging a Japanese submarine's guns over Ceylon (Sri Lanka) and an engine cylinder failure on Christmas Eve. The trip made the flying boat – renamed the Pacific Clipper after its arrival – the first commercial aircraft to fly around the world.

Around the world in many ways: