Handwritten letter from Hoquiam, Washington skydiver analyzing the Cooper jump, with envelope
Document date 29 November 1971
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Id: Cooper-Part-74:048-050
Subject: Cooper Files: Cooper-Part-74:048-050 Document: Handwritten letter from Hoquiam, Washington skydiver analyzing the Cooper jump, with envelope Id: Cooper-Part-74:048-050 Page: https://cooper.theunsolved.net/documents/Cooper-Part-74%3A048-050 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 74 pp. 48–50 (DB Cooper-31890–31892), Letter, dated 29 Nov 1971 — cooper.theunsolved.net/documents/Cooper-Part-74%3A048-050
[REDACTED] Hoquiam, Wash.
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Office of the Federal Bureau of Investigation Seattle, Wash. 98331
Dear Sirs, I have read in the newspapers of your efforts to locate the parachutist who hijacked the 727. The reason for my letter is that I have [REDACTED] therefore might have some apriori knowledge or instinct of how another experienced jumper might think, and react. You hypothesized that: since he is an experienced jumper, he would leave the, plane over a dense, wooded, unpopulated area. No!
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SEARCHED _____ INDEXED _____ SERIALIZED _____ FILED _____ NOV 2 9 1971 FBI - SEATTLE
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DB Cooper-31890
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164-81-[illegible]-R
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b6 b7C
2.
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Night jumps are were controlled at most commercial DZ. The DZ is usually circled with cars with their lights [guess: formed] on with some flares going in the center. The point here is that, if an experienced jumper is, for example, blown over his prearranged DZ, he has two choices: 1. turn into the wind and lose and [guess: lock] he lands close by and doesn't back into a [guess: free] cars building etc.; 2. get on the wind line and turn and run and pick an alternate DZ that is both lighted and big enough that he can get into. Most experienced jumpers will take #2.
The skyjacker would have gone into his dark wooded area at night only if he could have identified a prearranged marked DZ before leaving the aircraft.
The experienced jumper can sense wind speed and direction in free fall and can make adjustments accordingly. "tracking" for example in which you can move one foot horizontally for every two feet vertically (some jumpers can achieve a better ratio, some worse, and some not at all).
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Sincerely Yours [REDACTED]
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b6 b7C
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DB Cooper-31891
[Return address, upper left:] [redacted], Hoquiam, Wash.
[Postmark:] HOQUI[AM] NOV 27 PM 1971
[Stamps: Frank Lloyd Wright 2¢ U.S. Postage stamp and a 6¢ U.S. Postage stamp]
[Addressee, center, handwritten:] Office of THE FEDERAL BUREAU of INVESTIGATION Seattle, Wash. 98331
[Bottom right corner:] DB Cooper-31892
[Right margin annotations:] b6 b7C
Serials: 164-81-?-R