Document date 18 November 1975AIDates: 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 73 p. 162 (DB Cooper-31498), Letter, dated 18 Nov 1975, serial SE 164-81-SUBR (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-73/pages/162
The scan is the source; the transcript is machine-generated from it.
from the height [an/the] object is
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[sketch of an object with airflow/trajectory arrows]
Thrown [guess: thusly] at that 196 mph speed
the air density - [guess: and the] [guess: size] - [guess: holding],
[guess: Dry] [guess: by a], [guess: you] may be anywhere
from 15 to 300 miles [guess: off] the
course [guess: you're] [guess: figuring].
Theres a [guess: ripple/wave] of air - [guess: displaced]
by [guess: plane]
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[sketch of turbulent airflow/ripple pattern]
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Its like when a pebble is dropped
into a pool - with ever widening
ripples.
Did that guy take all 4 chutes
with him or just the one?
At 10,000 ft a guy [guess: gets]
the bends without oxygen if
(over)