Martin flying boat “Hawaii Clipper” departed Alameda on a flight across the Pacific Ocean to Manila. Intermediate stops were made in Hawaii and Guam. The airplane departed Guam at 11:39 (18:30 CST). The last radio contact was at 22:03 CST saying that it was 565 miles from the Philippine coast, flying through layers of clouds and moderately rough air. The aircraft failed to arrive at Manila and a search was initiated. On 30 July, the Unites States Army transport ship USAT Meigs discovered an oil slick approximately 28 nautical miles (52 kilometers) south-southeast of the flying boat’s last reported position. The slick was described as being approximately 1,500 feet (457 meters) in circumference. No physical evidence of the Martin M-130 has ever been found. Search for the plane was called off on August 5, 1938.