/airtel SAC Seattle re Boeing 727 technical data on aft stairs
Document date 8 December 1971
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Id: Cooper-Part-64:007-007
Subject: Cooper Files: Cooper-Part-64:007-007 Document: Memo/airtel SAC Seattle re Boeing 727 technical data on aft stairs Id: Cooper-Part-64:007-007 Page: https://cooper.theunsolved.net/documents/Cooper-Part-64%3A007-007 What is wrong (title, date, type, which pages belong together, copies)? What does the scan show?
A person reads every report. Corrections are made by hand, to the data — titles, dates, names, which pages belong together — never to the scans, and they can take a while to appear.
FBI 164-81, Vault Part 64 p. 7 (DB Cooper-26693), Memo, dated 8 Dec 1971, serial SE 164-81-1050 (as read from the transcript) — cooper.theunsolved.net/documents/Cooper-Part-64%3A007-007
SAC (164-81)(P) 12/8/71
SA [REDACTED] b6 b7C
UNSUB, aka Dan Cooper; NORTHWEST AIRLINES FLIGHT 305 PORTLAND TO SEATTLE, 11/24/71 RE: Boeing Technical CAA-HIJACKING; Data EXTORTION OO: SE RE: [REDACTED]
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On 12/2/71, [REDACTED] [REDACTED] Seattle, Washington, furnished the following information:
He was [REDACTED] [REDACTED] testing of this aircraft.
It is physically impossible to make a take-off in the 727 with the rear stairs extended. He explained that if this were attempted the stairs would strike the runway at the point of rotation just prior to liftoff.
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[REDACTED - entire block redacted]
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164-81-1050 SERIALIZED/FILED DEC 0 9 1971 FBI-SL
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JCN/djs (3)
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DB Cooper-26693
Serials: SE 164-81, SE 164-81-1050