TheAztec crashed saucer hoax (sometimes known as the "otherRoswell") was aflying saucer crash alleged to have happened in 1948 inAztec, New Mexico. The story was first published in 1949 by journalistFrank Scully in hisVariety magazine columns, and later in his 1950 bookBehind the Flying Saucers. In the mid-1950s, the story was exposed as a hoax fabricated by twocon men, Silas M. Newton and Leo A. Gebauer, as part of a fraudulent scheme to sell supposed alien technology. Beginning in the 1970s, someufologists resurrected the story in books claiming the purported crash was real.[1][2][3] In 2013, anFBI memo claimed by some ufologists to substantiate the crash story was dismissed by the bureau as "a second- or third-hand claim that we never investigated".[4]
According to Scully, in March 1948, an unidentified aerial craft containing sixteen humanoid bodies was recovered by the military in New Mexico after making a controlled landing in Hart Canyon 12 miles northeast of the city of Aztec. The craft was said to be 99 feet (30 m) in diameter, the largest UFO to date. Scully named as his sources two men identified as Newton and Gebauer, who reportedly told him the incident had been covered up and "the military had taken the craft for secret research".[3][5][6]
Scully wrote that the crashed UFO along with other flying saucers captured by the government came fromVenus and worked on "magnetic principles". According to Scully, the inhabitants stocked concentrated food wafers and "heavy water" for drinking purposes, and every dimension of the craft was "divisible by nine". Science writerMartin Gardner criticized Scully's story as full of "wild imaginings" and "scientific howlers".[7]
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During the late 1940s and early 1950s, Silas Newton and Leo A. Gebauer traveled through Aztec, attempting to sell devices known in the oil business asdoodlebugs.[8] They claimed that these devices could find oil, gas and gold, and that they could do so because they were based on "alien technology" recovered from the supposed crash of a flying saucer. When J. P. Cahn of theSan Francisco Chronicle asked the con men for a piece of metal from the supposed alien devices, they provided him with a sample that turned out to be ordinaryaluminum.[8] In 1949, author Frank Scully published a series of columns inVariety magazine retelling the crash story told to him by Newton and Gebauer. He later expanded these columns to createBehind the Flying Saucers in 1950, a best selling book that influenced public perceptions about UFOs. Two years later, in 1952, the hoax was exposed inTrue magazine,[9] with a follow-up article in 1956 presenting other victims of Newton and Gebauer.[10] One of the victims was the millionaire Herman Flader, who pressed charges. The two were convicted of fraud in 1953.[1][3]

Through the mid-1950s to the early 1970s, most ufologists considered the subject thoroughly discredited and therefore avoided it. In 1966, the bookIncident at Exeter mentioned rumors of dead alien bodies stored atWright-Patterson Air Force Base. Those rumors inspired the 1968 novelThe Fortec Conspiracy. In 1974, ufologistRobert Spencer Carr publicly claimed alien bodies recovered near Aztec were stored at"Hangar 18" at Wright-Patterson, prompting official denials from the Air Force.[12]
However, in the late 1970s, authorLeonard Stringfield purported that not only was the incident real, but that the craft involved was one of many captured and stored by the U.S. military.[13] In later years, many accounts, allegedly first-hand, of theRoswell crash contained the Aztec crash story,[13] with some claiming the craft was made of a material impervious to all heat, and others alleging the craft was damaged by the crash. The supposed humanoid bodies were said to measure between 36 inches (91 cm) and 42 inches (110 cm) in height, and weigh around 40 pounds (18 kg). Ufologists claim that shortly after the craft was downed, the military cleared the area of evidence, including the bodies, and subsequently took it to Hangar 18 at Wright-Patterson.[2][3]
In April 2011, theFBI launched The Vault, a website containing documents and media from the agency's FOIA (Freedom of Information Act) Library. Some UFO enthusiasts found what has come to be known as the "Hottel memo" on The Vault, and touted it as new proof of an official cover-up by the US government. However, the memo had never been classified, and had been known to the ufology community for years, having been alleged as early as 1998 to be evidence of a landing by extraterrestrials.[8]

The memo contained the report of a man named Guy Hottel, who was the FBI agent in charge of the Washington field office at the time.[14] It was addressed toJ. Edgar Hoover and indexed in the FBI records, but this was standard practice at the time.[14] It was later discovered that Hottel's report was a retelling of a story that had been taken from a January 6, 1950, article published inthe Wyandotte Echo, aKansas City, Kansas, legal newspaper. TheWyandotte Echo article itself related the account of a local car salesman and radio station advertising manager.[8] Ultimately the details within the FBI memo can be traced directly back to the initial hoax story.[8]
After the memo was posted on The Vault, it received over a million views within 2 years.[14] In 2013, the FBI issued apress release concerning the memo. Addressing the memo's context and possible connection to a hoax, the Bureau concluded, "Finally, the Hottel memo does not prove the existence of UFOs; it is simply a second- or third-hand claim that we never investigated. Some people believe the memo repeats a hoax that was circulating at that time, but the Bureau’s files have no information to verify that theory."[4]
The incident gave birth to the Aztec UFO Symposium, which was run by the Aztec, New Mexico, library as a fundraiser from 1997 until 2011.[6][15]