Document date 20 June 1973AIDates: machine-written — generated by an AI model from the transcripts, and it can be wrong. The scan is the source; the transcript is machine-generated from it.
FBI 164-81, Vault Part 116 p. 206 (DB Cooper-53217), Airtel, dated 20 Jun 1973, serial SE 164-81-4667 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-116/pages/206
Referenced communication enclosed a letter
from a [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.
One of the solutions was described by [REDACTED]
as follows:
[REDACTED 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