China Clipper flight departure site when Sikorsky S-42 "Samoan Clipper" exploded over Samoa in January, 1938. "Hawaii Clipper" disappeared westbound from Guam to Manila in July, 1938. There were unsubstantiated rumors of Japanese involvement, similar to those arising from the disappearance of Amelia Earhart a year earlier. Earhart's navigator, Fred Noonan, had been navigator aboard "China Clipper" during the initial airmail flight. Boeing 314 flying boats "Honolulu Clipper" (NC18601) and "California Clipper" (NC18602) joined the surviving Martin M-130s in 1939, and "Pacific Clipper" (NC18609) and "Anzac Clipper" (NC18611) extended service to New Zealand and Australia in 1941. "Philippine Clipper" returned to Wake when it received
Fred Noonan a navigation instructor in Miami and an airport manager in Port-au-Prince, Haiti, eventually assuming the duties of inspector for all of the company's airports. In March 1935, Noonan was the navigator on the first Pan Am Sikorsky S-42 clipper at San Francisco Bay. In April he navigated the historic round-trip China Clipper flight between San Francisco and Honolulu, piloted by Ed Musick (who was featured on the cover of "Time" magazine that year). Noonan was subsequently responsible for mapping Pan Am's clipper routes across the Pacific Ocean, participating in many flights to Midway Island, Wake Island, Guam, the Philippines, and