AirtelSAC Seattle to Acting Director FBI re NORJAK proposed solution submitted by correspondent20 June 1973page 1 of 3
memoLegibility: high

Part 32, page 2

Serials 164-2111, 164-31, MP 164-73, SE 164-81-Y807

Document date 20 June 1973

Open in FBI Vault (Part 32, page 2 of the PDF)

FBI 164-81, Vault Part 32 p. 2, Airtel, dated 20 Jun 1973, serial SE 164-81-Y807 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-32/pages/2

Transcript

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

6/20/73

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AIRTEL AIRMAIL

TO: ACTING DIRECTOR, FBI (164-2111) FROM: SAC, SEATTLE (164-31) (P) SUBJECT: NORJAK OO: SEATTLE

Re Bureau letter to Seattle, dated 6/8/73.

Referenced communication enclosed a letter from [REDACTED] who has offered two possible solu- tions to captioned matter. Seattle Division's comments to the feasibility and plausibility of these solutions were requested by the Bureau.

[REDACTED] One of the solutions was described by [REDACTED] as follows:

[REDACTED - large block]

This is not plausible because the point at which the hijacker left the aircraft was determined by time correlation of a tape recording of the comments of the crew during a "pressure oscillation." This oscilla- tion was later determined to be caused by outside air pressure forcing closed the air stairs, thereby causing an increase in air pressure inside the plane, similar to shutting a car door with the windows up. This

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2 - Bureau 2 - Minneapolis (164-73) (2)- Seattle RMN:kn (6)

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Searched Serialized Indexed [illegible]

164- 81- Y807

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b6 b7C b7D