SA Ketcham to SAC Seattle re caller theory of radio receiver in attache case
Document date 4 December 1971
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Id: Cooper-Part-70:322-322
Subject: Cooper Files: Cooper-Part-70:322-322 Document: Memo SA Ketcham to SAC Seattle re caller theory of radio receiver in attache case Id: Cooper-Part-70:322-322 Page: https://cooper.theunsolved.net/documents/Cooper-Part-70%3A322-322 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 70 p. 322 (DB Cooper-30174), Memo, dated 4 Dec 1971, serial SE 164-81-623 (as read from the transcript) — cooper.theunsolved.net/documents/Cooper-Part-70%3A322-322
OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.6 UNITED STATES GOVERNMENT
Memorandum
TO : SAC, SEATTLE (164-81) DATE: 12/4/71
FROM : SA JOHN L KETCHAM (P)
CC- SUB N. SUBJECT: UNKNOWN SUBJECT; NORTHWEST AIRLINES FLIGHT #305, PORTLAND TO SEATTLE, 11/24/71 CAA - HIJACKING; EXTORTION OO: SEATTLE BUFILE 164-2111
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On 12/4/71 [REDACTED] called to suggest that there might be some possibility that a radio receiver was in the hijacker's attache case. This could be used in conjunction with a low frequency transmitter on the ground - to know when to drop. He said this would put one within a 3 mile radius from a 10,000 foot level jump on target.
However, he noted too, that any transisterized receiver in use should be reflected in the plane instruments - so pilot should be able to tell that such was the case (transceiver in use)
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164-81-623 SEARCHED _____ INDEXED _____ SERIALIZED _9_ FILED _9_ DEC 6 FBI — SEATTLE
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b6 b7C
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DB Cooper-30174
Serials: 164-2111, SE 164-81, SE 164-81-623
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Very similar text — possibly a copy redacted differently, or another memo written from the same template.