Part 10, page 167

Document date 1 March 1977

Open in FBI Vault (Part 10, page 167 of the PDF)

FBI 164-81, Vault Part 10 p. 167 (DB Cooper-1393), Airtel, dated 1 Mar 1977, serial SE 164-81-1624 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-10/pages/167

Transcript

The scan is the source; the transcript is machine-generated from it.

PD 164-41

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[REDACTED] advised that he has thought considerably about the hijacking in this matter and has concluded that it is not realistic to assume that the hijacker survived the jump. He said that in view of the very dense terrain in the drop zone area, he can understand why the hijacker's remains have not been found. He suggested that one way this might be facilitated

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[REDACTED — large block of text removed under b6/b7C exemptions]

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Information available to Portland indicates the wind believed to be in effect in the drop zone area at the time the hijacker parachuted was coming from the southwest. If that is the case and the Northwest engineers who computed the location of the drop zone and the prime line along which UNSUB presumably fell were using southwest wind information, then the calculations of the location of the drop zone may not be accurate. A shift of wind from the west to the south would push the east end of the prime line to the north in a counter-clockwise direction. It could cause previously unsearched territory to the west of the drop zone to be included in a new, amended drop zone.

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LEAD

SEATTLE

AT SEATTLE, WASHINGTON. Will consider causing a dicussion of this matter with the Northwest Airlines engineers who computed the drop zone in this matter to determine whether the information from [REDACTED] is of any significance.

ARMED AND DANGEROUS

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DB Cooper-1393

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- 2 -

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b6 b7C

AI notes

Commentary by the AI model that transcribed this page. It may bring in context the page itself does not state. The scan is the source; the transcript is machine-generated from it.

Case file number for the Portland FBI field office D.B. Cooper case. A redacted source advises that they have thought extensively about the hijacking and concluded it is not realistic to assume the hijacker survived the jump. Due to dense terrain in the drop zone, the source understands why remains have not been found and suggests a way to facilitate finding them (text continues into a large redacted box). A large redacted section, likely continuing the source's suggestion on how to locate the hijacker's remains. Wind data available to Portland suggests the wind was from the southwest when the hijacker jumped. If Northwest engineers used that southwest wind data to compute the drop zone, a shift in wind direction could mean the calculated drop zone is inaccurate. A westerly-to-southerly wind shift would rotate the prime line counter-clockwise, potentially adding unsearched territory west of the current drop zone. A lead is assigned to the Seattle field office to discuss the drop zone calculations with Northwest Airlines engineers and determine whether the redacted source's information about wind direction is significant. The subject is noted as armed and dangerous. Bates stamp or document tracking number for the D.B. Cooper file. Page 2 indicator of a multi-page document. FOIA exemption codes in the right margin indicating redactions are for personal privacy (b6) and source identity protection (b7C).

Several redacted (blacked-out) blocks obscure names/sources
Marginal annotations 'b6' and 'b7C' indicate FOIA exemption codes
Upper portion of page has a large blank/redacted box
Some words slightly degraded but mostly legible

Part 10, page 167

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