Part 66, page 25
Document date 25 November 1971
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FBI 164-81, Vault Part 66 p. 25 (DB Cooper-27714), Report, dated 25 Nov 1971 — cooper.theunsolved.net/parts/Cooper-Part-66/pages/25
Transcript
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NWA Chief Pe[redacted]rmance Engineer had been[redacted]lled to field to help calculate range, etc. Boeing Company had been contacted for assistance in range problem, flight characteristics with air-stairs extended, whether opening (stairs extend about 20° in flight, possibly more with man's weight on them) would be large enough for a man to exit. Boeing assured us there would be no controllability problem, that they would get experts work- ing on range problem also, that they had dropped 2-300# boxes out air-stair opening in flight and that man could probably get out.
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NF A Communications people also had arrived at field to assist in required 'phone-patching, 'other communications problems.
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Mr. Nyrop, [redacted], four supervisory pilots, b6 1 performance engineer, many others on the scene (MSPFO) for b7C assistance.
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2145* Flight at 7000', 160KIAS, fuel flow (FF) 4500#/engine, flaps 30° gear DOWN. MSPFO advised they would have even more severely limited range in the flaps 30° position. Crew given preliminary information on optimum range IAS (170K), weather, air- ports available between SEA and RNO, minimum obstruction clearance altitudes, etc.
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2155 MSPFO asked for stewardess best recollection of exact content of HJ briefcase. She got on radio and gave following basic information:
- Eight red sticks, about 6" x 1" in left corner of brief case, "look like big firecrackers." Two rows of sticks, four on top of four. - Wire attached to dynamite with red insulation. - Battery "like flashlight battery, but about 6" high and as big around as my arm". - Red sticks are about the color "of my uniform".
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2205* Crew called HJ and asked him if everything was O.K. and he replied that it was. This was apparently the last communi- cation the crew had with the HJ.
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2210* Crew reported oscillation of cabin rate of climb indicator. This probably due to HJ weight now on stairs, stairs extending further, resultant effect on cabin pressure. May be best estimate of when he exited airplane.
MSPFO advised crew that range to RNO now looked good (air- plane now at 10,000', 170K, gear DOWN, flaps 15°, FF 4000#/ hour/engine. TAT -7°C. MSPFO calculated TAS and range from this data.
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DB Cooper-27714