Insert re log entries and cabin oscillations indicating air stair manipulation

Title revised to match the document’s own text.

Original title: Insert re ATC log entries and cabin oscillations indicating aft airstair manipulation

Part 110page 2501 pageDB Cooper-546

Open in FBI Vault (Part 110, page 250 of the PDF)
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Id: Cooper-Part-110:250-250

Subject: Cooper Files: Cooper-Part-110:250-250

Document: Insert re log entries and cabin oscillations indicating air stair manipulation
Id: Cooper-Part-110:250-250
Page: https://cooper.theunsolved.net/documents/Cooper-Part-110%3A250-250

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FBI 164-81, Vault Part 110 p. 250 (DB Cooper-546), Report — cooper.theunsolved.net/documents/Cooper-Part-110%3A250-250

SE 164-81

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An entry at 8:12 PM, PST, which would have been made after the time of the incident reported, indicated the plane advised Control, that they were getting some oscillations in the cabin, and concluded the hijacker was doing something with the air stairs.

There follows, three pages of maps on which an approximate course of the aircraft has been drawn. Also shown is the probable bail out point of the hijacker.

The plane landed at Reno, at 11:05 PM, PST, and an immediate search thereof, reflected that the hijacker was not aboard.

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DB Cooper-546

Serials: SE 164-81