Document date 30 May 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 78 p. 257 (DB Cooper-34129), Report, dated 30 May 1973, serial 276-44-0983 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-78/pages/257
The scan is the source; the transcript is machine-generated from it.
SE 164-81
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On 1/6/72, the NWA 727 which was actually involved
in the hijacking, was flown to Seattle, by [REDACTED]
for the purpose of conducting a test to see if the "pressure
bump" experienced during the hijacking, was caused by someone
thing leaving the aircraft.
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The conclusion from that test was that the cabin
pressure change occurred when the stairs were forced upward
by the air pressure after the weight had been removed.
according to [REDACTED] who was a member of
the hijacked crew, and also a member of the crew when
the test was performed, the occurrence was identical with
the incident on the night of the hijack. Also the
instrument in the cabin which reacted so violently on
the night of the hijacking, also reacted the same way when
the test was performed.
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[REDACTED], based on the test flight above,
then prepared a memo showing the steps by which he arrived
at the best probable bail out point of the hijacker, and
plotted this area on a map. This information is set forth
as follows: