Part 11, page 4
DB Cooper-1897Serials SE 164-81, SE 164-81-151
Document date 28 November 1971
FBI 164-81, Vault Part 11 p. 4 (DB Cooper-1897), Memo, dated 28 Nov 1971, serial SE 164-81-151 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-11/pages/4
Transcript
The scan is the source; the transcript is machine-generated from it.
OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.6 UNITED STATES GOVERNMENT Memorandum
TO : SAC, SEATTLE (164-81) DATE: 11/28/71
FROM : ASAC PAUL R. BIBLER
SUBJECT: UNKNOWN SUBJECT; NORTHWEST AIRLINES FLIGHT 305 PORTLAND TO SEATTLE 11/24/71 CAA - HIJACKING; EXTORTION OO: Seattle
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Sub E SUB. - SEARCH
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[REDACTED] Northwest Flight Dispatch Center, called twice on the afternoon of November 28, 1971. The first time he advised that he had checked on possible information and believed that a more accurate pin-pointing of the possible place of descent of the hijacker would be three statute miles east northeast of LaCenter, Washington, on a bearing of 080 degrees, true. He said the center of the circle would depend on the clock being a few seconds off one way or the other or the Unsub falling free before he opened the chute. However, he would estimate that a circle with a three-mile radius from the point described above should come close to the place of descent.
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He called back subsequently and said that he had talked to the man who was working the radar at Portland which was very accurate since it was very close to the plane at the time and determined that the plane was actually one to two miles east of the center of this particular fly-way. He said for this reason, we might consider moving the center of the circle described above one or two miles due east.
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This information was furnished to SA MANNING on November 28, 1971. He was instructed to make certain that this area was thoroughly searched and to consider air coverage on November 29, 1971.
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[guess: To] PLANNING [guess: By] [guess: phone] 11-28-[guess: 71]
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PRB:bfr (3)
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164-81-151 SEARCHED INDEXED SERIALIZED [guess: Ab] FILED [guess: Ab] NOV [guess: 3] 0 1971 FBI—SEATTLE [illegible] A [illegible] [guess: Routed for information]
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Buy U.S. Savings Bonds Regularly on the Payroll Savings Plan
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DB Cooper-1897
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b6 b7C