SA Thomas J. Manning to SAC Seattle re aerial and ground search of flight path
Document date 26 November 1971
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Id: Cooper-Part-10:501-502
Subject: Cooper Files: Cooper-Part-10:501-502 Document: Memo SA Thomas J. Manning to SAC Seattle re aerial and ground search of flight path Id: Cooper-Part-10:501-502 Page: https://cooper.theunsolved.net/documents/Cooper-Part-10%3A501-502 What is wrong (title, date, type, which pages belong together, copies)? What does the scan show?
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FBI 164-81, Vault Part 10 pp. 501–502 (DB Cooper-1741–1742), Memo, dated 26 Nov 1971 — cooper.theunsolved.net/documents/Cooper-Part-10%3A501-502
OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.6 UNITED STATES GOVERNMENT Memorandum
TO : SAC, SEATTLE (164-81) DATE: 11/26/71
FROM : SA THOMAS J. MANNING
SUBJECT: UNSUB; NORTHWEST AIRLINES FLIGHT #305, PORTLAND TO SEATTLE, 11/24/71 CAA - HIJACKING; EXTORTION OO: SEATTLE
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FLASHING LIGHTS OF AIRCRAFT,
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On 11/25/71, a search of pertinent area as furnished by Northwest Airlines personnel, commenced. Ground search initiated on 11/25/71, in limited way.
On 11/26/71, two Army helicopters from Gray Field, one Weyerhauser Company helicopter and a Bonneville Power Administration helicopter, were utilized in covering a area of search, including the route of the hijacked plane from Lake Merwin on the north, to the vicinity of Battle Ground, on the south. Due to weather conditions, only three of six sections were able to be covered. Ground search negative except for an area in the north easterly quadrant of the search, where two individuals made comments concerning low flying aircraft at pertinent time. One individual advised the craft was so low that it shook their house and this time was fixed at approximately 8:20 PM, but no positive time could be given. This individual stated that weather conditions at that time in this area, were misting rain.
A second individual in the Amboy, Washington vicinity, advised that at approximately 8:00 PM, with misting rain, conditions, a low flying jet plane, going north to south and unusually low, was sited. ALL THE LIGHTS on this plane, including the cabin lights, were going on and off. This person was questioned concerning the navigation lights and stated emphatically, that ALL THE LIGHTS were going on and off.
No observation of objects dropping from plane reported at this time.
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The Lake Merwin area has been su[b]merged to[illegible] intense boat search by the Cowlitz County [Sheriff's] [illegible] with negative results, except for the siting of [a] whi[te] [illegible]
TJM:klb THIS HAS BEEN DONE FBI - SEATTLE (3)
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DB Cooper-1741
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Buy U.S. Savings Bonds Regularly on the Payroll Savings Plan
SE 164-81
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UNIDENTIFIED object high on a bluff on the south side of the lake, a short distance from the flight pattern of the hijacked aircraft. Attempts were made by helicopters to view this unidentified object with negative results due to hazardous flying conditions, low clouds and rain storms. This item will be the subject of intensive search immediately by helicopters taking off on 11/27/71, and will be considered a prime search area.
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It is felt that the pilot and crew of the hijacked aircraft should be questioned concerning the lights on the plane going off, from 8:00 to 8:15 PM, to determine if this was in fact the hijacked aircraft. Further, it is felt that the crew of this plane should be asked a specific question of why they continued the flight to Reno, when the feeling of the pilot and crew was that the subject exited the plane at or about the Lake Merwin vicinity.
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Further it is felt that the pilot and crew should be specifically asked if they had visual sitings of landmarks on course of the hijacked aircraft, particularly in the suspected drop area. It is to be noted in this regard, that a flashing radio beacon at Kalama, Washington, could have been viewed by the hijacker at the altitude which the plane was flying at that time.
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Intensive search with four helicopters will be resumed at approximately 8:30 AM, 11/27/71, with concentration of search area being in the vicinity of the east side of plotted line per conversation with SAC.
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DB Cooper-1742
Serials: SE 164-81
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