Portland Division investigative insert re Portland International Airport and search of Flight 305 route
This copy: Part 92 pp. 175–176Also filed at Part 18 pp. 144–145 (primary)
This copy’s own title
Investigative insert re Portland Division activity at Portland International Airport and aerial search of Flight 305 route
Another copy of this document is the primary, most legible copy: Part 18 pp. 144–145.
Copies may differ in what was redacted.
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Id: Cooper-Part-92:175-176
Subject: Cooper Files: Cooper-Part-92:175-176 Document: Investigative insert re Portland Division activity at Portland International Airport and aerial search of Flight 305 route Id: Cooper-Part-92:175-176 Page: https://cooper.theunsolved.net/documents/Cooper-Part-92%3A175-176 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 92 pp. 175–176 (DB Cooper-41049–41050), Report — cooper.theunsolved.net/documents/Cooper-Part-92%3A175-176
SE 164-81 PD 164-81 RPH:csm 1
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The following is a summary of investigation conducted by Portland Division in this matter:
AT PORTLAND INTERNATIONAL AIRPORT (PIA):
On the evening of November 24, 1971, beginning while the hijacking was in progress, Portland Agents interviewed airport, airlines and security personnel, taxicab and bus drivers, gift shop, insurance stands, car storage lot, car rental agency, coffee shop, cocktail lounge and dining room personnel in an effort to identify the unknown subject or develop background information. All interviews were negative except those with the Northwest Airlines ticket agent who sold unknown subject the ticket and the Boarding Gate Clerk, interviews of whom are reported separately.
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SEARCH OF ROUTE FLOWN BY FLIGHT 305
On November 25, 1971, a low-altitude air search pattern was flown in a fixed-wing light aircraft at slow speed by SA RALPH P. HIMMELSBACH, accompanied by Chief ARTHUR ENDERLIN, West Linn Police Department, West Linn, Oregon, who[REDACTED]. This search covered an area of Clark County, Washington, from airway Victor 23 on the west to approximately eight miles east of Victor 23, and from Lake Merwin on the north to the city of Vancouver on the south. Nothing pertinent to this investigation was observed.
On November 29, 1971, that portion of the route flown by Flight 305 from Portland, Oregon to Eugene, Oregon was air- searched by two fixed-wing light aircraft flown by SAs[REDACTED] and RALPH P. HIMMELSBACH, respectively, with SAs[REDACTED] [REDACTED], respectively, as observers. On the same date, two Army National Guard jet helicopters also flew this search route. Each helicopter bore three crewmen. SAs[REDACTED] observed from one helicopter, and SAs[REDACTED] observed
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DB Cooper-41049 [illegible handwritten text]
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SE 164-81 PD 164-41 RPH:csm 2
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from the other. The entire search was conducted with negative results.
On November 30, 1971, SA THOMAS G. ACKERMAN air-searched the portion of the hijack route from Eugene, Oregon to the Grants Pass, Oregon area in a fixed-wing light aircraft piloted by [REDACTED], Eugene. On the same date, the route from the Grants Pass area south to the Oregon-California border was flown by SA[REDACTED] in a light fixed-wing aircraft operated by Federal Aviation Administration (FAA) personnel.
In addition, arrangements were made on November 30, 1971 with[REDACTED] respectively, of Bonneville Power Administration, Department of the Interior, and the U.S. Forest Service, Department of Agriculture, to instruct the fixed-wing and helicopter pilots of both services flying along the hijack route in this matter to be alert for anything relating to the hijacker.
On November 30, 1971,[REDACTED] Portland Flight Service Station, FAA, caused an examination and verifi- cation of the log of pre-flight weather briefings given to general aviation pilots who contacted this station on November 24, 1971, and advised that all such contacts appeared to be legitimate, resulting in no suggested suspects in this matter.
Subsequent to the availability of the composite artist's conception sketches in this matter, persons in logical capacities at Portland International Airport were recontacted and shown the sketches, with negative results.
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DB Cooper-41050
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