Part 14, page 67
DB Cooper-3376Serials SE 164-81, SE 164-81-7493
Document date 3 December 1971
FBI 164-81, Vault Part 14 p. 67 (DB Cooper-3376), Memo, dated 3 Dec 1971, serial SE 164-81-7493 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-14/pages/67
Transcript
The scan is the source; the transcript is machine-generated from it.
OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.6 UNITED STATES GOVERNMENT Memorandum
TO : SAC, SEATTLE (164-81) (P) DATE: 12/3/71
FROM : SA ROBERT ROSS REYNOLDS and SA DONALD J. STEELE [REDACTED - b6, b7C]
SUBJECT: UNKNOWN SUBJECT, aka Dan Cooper NORTHWEST AIRLINES FLIGHT #305, PORTLAND TO SEATTLE, 11/24/71 CAA-HIJACKING; EXTORTION OO: SEATTLE
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Sub D Parachutes
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On 12/3/71, [REDACTED] telephone [REDACTED] advised as follows:
Q. [REDACTED] given the following set of circumstances, the Boeing 727 which you are generally familiar with, the rear stairway flying at 10,000 feet through clouds at about 178 knots on IFR Flight, what would be the conditions that would exist as soon as the cabin was depressurized?
A. As soon as the hatch was cracked, there would be depression matters of the aircraft. The lowering of the stairwell would create a [REDACTED] effect on the entire aircraft because the air flow is disrupted here which would naturally effect the aircraft.
Q. This would have no material effect on the jumper physiologically at this altitude?
A. No, not at 10,000 feet.
Q. This would be a very practical altitude in which to jump?
A. Certainly.
Q. Would this be an ideal type aircraft from which to make a daylight or night jump?
A. Yes.
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164-81-7493 SEARCHED _____ INDEXED _____ SERIALIZED _____ FILED _____ DEC 6 1971 FBI — SEATTLE
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RRR/DJS:md (1)
DB Cooper-3376
Buy U.S. Savings Bonds Regularly on the Payroll Savings-Plan