Pan Am Flight 229

Pan Am Flight 229 was a regularly scheduled passenger flight from San Francisco to Manila, which on July 28 1938, disappeared after flying over the Pacific Ocean. The flight was operated by Hawaii Clipper, one of Pan American's 3 Martin M-130flying boats. It disappeared with six passengers and nine crew. One passenger was Fred Meier, an aerobiologist, as discussed in the book “Air-Borne” (ISBN 978-0-593-47359-7.) The book also names 3 other passengers.