Document date 26 November 1971AIDates: 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 10 p. 428 (DB Cooper-1661), Teletype, dated 26 Nov 1971, serial SE 164-81-39 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-10/pages/428
The scan is the source; the transcript is machine-generated from it.
MP 164-NEW
PAGE TWO
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NORTH NORTHWEST OF HEISSON, WASHINGTON. THESE COMPUTATIONS
WERE ARRIVED AT BASED ON THE ALTITUDE, DIRECTION AND SPEED
OF THE AIRCRAFT WHICH WAS THEN FLYING VECTOR BETWEEN SEATTLE
AND PORTLAND WHEN A PRESSURE BUMP AND OSCELATION OF THE
AIRCRAFT WAS NOTED BY THE CREW. TO THOSE FAMILIAR WITH THE
AIRCRAFT, IT WOULD INDICATE THE REAR DOOR WAS OPENED,
CAUSING THE PRESSURE TO DROP AND WOULD BE A VERY LIKELY TIME
FOR UNSUB'S DEPARTURE FROM THE AIRCRAFT.
HIS NOTES INDICATE THAT AT MINNEAPOLIS TIME TWENTY ONE
FORTY ONE A STEWARDESS WAS ORDERED TO THE COCKPIT BY THE
HIJACKER. AT TWENTY ONE FORTY TWO THE HIJACKER ADVISED BY
INTER-PHONE THAT HE WAS HAVING DIFFICULTY GETTING STEPS DOWN.
AT TWENTY TWO ZERO FIVE THE COCKPIT WAS IN COMMUNICATION WITH
THE HIJACKER, AND AT TWENTY TWO-TEN THE PRESSURE BUMP AND
OSCELATION OCCURRED. NO FURTHER COMMUNICATION WAS HAD WITH
THE UNSUB SUBSEQUENT TO THIS TIME.