Documents / Document
This Black Vault release contains the Air Force's 2001 response from the 341st Space Wing FOIA office at Malmstrom AFB, Montana, to a request about the 16 March 1967 Echo Flight missile shutdown, with excerpts from 341st Strategic Missile Wing histories covering 1967 to early 1968. The histories say all ten Echo Flight launch facilities lost strategic alert almost simultaneously. Investigators could not find a logical cause and found rumors of UFOs near Echo Flight to be unfounded.
“Seattle”11 pages
time the response would have placed the system in a non EWO status. $ ^{6 0} $
A 30 micro sec Pulse is equivalent to a frequency of 3 KC and previous testing at the LF and NRA have indicated the Pulse coupling within the LF is present at frequencies in this general area. OONE has conducted tests at the Hill Experimental Launch Facility on the Wing II-V Logic Coupler to determine if it could be a receiver to this same type Pulse. This testing will indicate if the Wing II-V, Logic Coupler will respond to a random Pulse similar to the response observed on the C-53P Logic Coupler during test at the Boeing NRA. 61 (U)
The results of these tests will be included in the next history. (U)
Due to the fact that the power tests were essentially negative, it appears that the cause of the Echo Flight problem was of the EHP or electrostatic nature. $ ^{62} $ (0)
A Channel 9 & 12 No-Go shut down has never been reported at Wings II thru V. This fact is probably due to the significant difference between the Wing I and the Wing II thru V, Logic Couplers as well as differences in the inter site cable and LF
60. Msg, (S) OONE 01787, OOAMA to BSD Norton AFB, "Malmstrom E Flight Problem Interim Report," 2 Jun 67, Ex 47.
61. Ibid.
62. Ibid. Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 88 pages are in the text index: search them above, or from the library's search.