SA Thomas J. Manning to SAC Seattle re verified alibis and beacon receiver lead
This copy: Part 13 pp. 86–87Also filed at Part 65 pp. 52–53 (primary) · Part 74 pp. 185–186
This copy’s own title
SA Thomas J. Manning to SAC Seattle re marker beacon receiver theory
Document date 3 December 1971
Another copy of this document is the primary, most legible copy: Part 65 pp. 52–53.
Copies may differ in what was redacted.
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Id: Cooper-Part-13:086-087
Subject: Cooper Files: Cooper-Part-13:086-087 Document: Memo SA Thomas J. Manning to SAC Seattle re marker beacon receiver theory Id: Cooper-Part-13:086-087 Page: https://cooper.theunsolved.net/documents/Cooper-Part-13%3A086-087 What is wrong (title, date, type, which pages belong together, copies)? What does the scan show?
A person reads every report. Corrections are made by hand, to the data — titles, dates, names, which pages belong together — never to the scans, and they can take a while to appear.
FBI 164-81, Vault Part 13 pp. 86–87 (DB Cooper-2889–2890), Memo, dated 3 Dec 1971, serial SE 164-81-552 (as read from the transcript) — cooper.theunsolved.net/documents/Cooper-Part-13%3A086-087
OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.6 UNITED STATES GOVERNMENT Memorandum
TO : SAC, SEATTLE (164-81) DATE: 12/3/71 Serb: Search [b6/b7C redaction] FROM : SA THOMAS J. MANNING [b6/b7C redaction]
SUBJECT: UNSUB, aka Dan Cooper; NW AIRLINES FLIGHT #305, PORTLAND TO SEATTLE, 11/24/71 CAA - HIJACKING; EXTORTION OO: SE
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Sub U. WEATHER + WIND b6 b7C [handwritten:] Oliv~
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Investigation in Clark and Cowlitz Counties on 12/3/71, consisted of the following:
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[redacted] mentioned in his interview at [redacted] Illinois, were contacted and alibi furnished [redacted] was verified.
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Investigation vicinity [redacted] reflected one woman, [redacted] recalls a light plane landing with its landing lights on between 8:00 and 8:30 PM, on 11/24/71, remaining on the ground for approximately one half hour. However, she pointed out that she finds nothing suspicious in this since a number of planes land at both the Hauhn and McClellan small air strips frequently, both day and night, and it is possible she may be confused on the exact time of the landing of the light plane which she has referred to as being 11/24/71.
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Information developed by SA [redacted] at Vancouver, Washington, reflects [redacted] possible suspect in hijacking and memo to file will be furnished by SA [redacted] on 12/6/71, with details.
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Contact made with U.S. Weather Bureau, Portland, Oregon, to determine exact weather from 7,000 feet to ground level on 11/24/71, reflects generally conditions previously furnished to case agent, except that some of these winds both at 7,000 feet and on the surface could have been coming from 225 to 235 degrees, a general southeast wind. Further information concerning the wind and weather conditions being furnished in insert form 164-81- 552 concerning search in general.
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[handwritten:] Weather Wind Sub U.
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TJM:klb (3) [handwritten initials]
Buy U.S. Savings Bonds Regularly on the Payroll Savings Plan DB Cooper-2889
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DEC 9 1971 [stamp text partially illegible] RET--SERIAL[?]
SE 164-81
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Information developed by SA [REDACTED] reflects that a market beacon receiver which could have allowed the skyjacker to zero in on a particular ground point from which a signal was eminating, is of cigarette package size. An advertisement of one particular type of marker beacon receiver is being submitted for information to the file.
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MARKER BEACON LIGHT [guess: RECIVR]
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b6 b7C
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DB Cooper-2890
Serials: SE 164-81, SE 164-81-552