Re theory that hijacker used portable VOR receiver to navigate during jump
Document date 29 November 1971
Part of: SAC Seattle to SAC Portland re Vancouver, WA information and Mayfield interview lead
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Id: Cooper-Part-90:146-146
Subject: Cooper Files: Cooper-Part-90:146-146 Document: Teletype re theory that hijacker used portable VOR receiver to navigate during jump Id: Cooper-Part-90:146-146 Page: https://cooper.theunsolved.net/documents/Cooper-Part-90%3A146-146 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 90 p. 146 (DB Cooper-40142), Teletype, dated 29 Nov 1971 — cooper.theunsolved.net/documents/Cooper-Part-90%3A146-146
FD-36 (Rev. 5-22-64)
FBI
Date: 11/29/71
Transmit the following in ___PLAINTEXT___ (Type in plaintext or code)
Via __TELETYPE__ __URGENT__ (Priority)
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COVERED TEL TO SE 11/29/71 VOR EQPT INDEX
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TO : SAC, PORTLAND FROM: SAC, SEATTLE (164-81)
UNSUB; NORTHWEST AIRLINES FLIGHT THREE ZERO FIVE, NOVEMBER TWENTYFOUR, NINETEEN SEVENTYONE, CAA DASH HIJACKING; EXTORTION. OFFICE OF ORIGIN: SEATTLE.
INFORMATION DEVELOPED NOVEMBER TWENTYEIGHT LAST AT VANCOUVER, WASHINGTON, THROUGH CONTACT WITH EXPERIENCED AVIATION PERSONNEL REFLECTS POSSIBILITY THAT A VOR RECEIVING DEVICE, POSSIBLY COMPOSED OF TRANSISTERIZED COMPONENTS, AND SMALL ENOUGH TO BE PLACED IN A POCKET, COULD HAVE BEEN USED BY THE SUBJECT TO MAKE GROUND CONTACT EVEN THOUGH VISUAL CONTACT WAS IMPOSSIBLE.
SEATTLE DIVISION SECURING LIST OF DISTRIBUTORS OF VOR COMPONENTS AT A AVIATION COMPANY IN VANCOUVER, WASHINGTON, AND IT HAS BEEN SUGGESTED THAT ANOTHER MANUFACTURER OF SUCH COMPONENTS IS HILLSBORO AVIATION AT HILLSBORO, OREGON.
PORTLAND, AT HILLSBORO, OREGON, CONTACT HILLSBORO AVIATION SECURE LIST OF DISTRIBUTORS OF SMALL VOR UNITS AND CONDUCT APPROPRIATE INVESTIGATION TO IDENTIFY INDIVIDUALS WHO HAVE PURCHASED SUCH ITEMS FROM THE DISTRIBUTORS. P
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TJM/rmh (1)
Approved: _______________ Special Agent in Charge
Sent _____________ M
[Stamp] SEARCHED __ INDEXED __ [Stamp] SERIALIZED __ FILED __ NOV : 1971 Per________
16-4-41-54 b6 b7C
DB Cooper-40142
Serials: SE 164-81