Part 110, page 140
Document date 24 November 1971
FBI 164-81, Vault Part 110 p. 140 (DB Cooper-432), Report, dated 24 Nov 1971 — cooper.theunsolved.net/parts/Cooper-Part-110/pages/140
Transcript
The scan is the source; the transcript is machine-generated from it.
-3-
---
NWA Chief Performance Engineer had been called 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.
N A Communications people also had arrived at field to assist in required 'phone-patching, other communications problems.
---
[ ] four supervisory pilots, b6 1 performance engineer, many others on the scene (MSPFO) for b7C assistance.
---
2145* Flight at 7000', 160KIAS, fuel flow (FF) 4500#/engine, flaps 7:45 P.M 30° gear DOWN. MSPFO advised they would have even more severely PST limited range in the flaps 30° position. Crew given prelimn- ary information on optimum range IAS (170K), weather, air- ports available between SLA and RNO, minimum obstruction clearance altitudes, etc.
---
2155 MSPFO asked for stewardess best recollection of exact content 7:55 PM of HJ briefcase. She got on radio and gave following basic PST 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".
---
2205* Crew called HJ and asked him if everything was O.K. and he 8:05 P.M. replied that it was. This was apparently the last communi- PST cation the crew had with the HJ.
---
2210* Crew reported oscillation of cabin rate of climb indicator. 8:10 P.M. This probably due to HJ weight now on stairs, stairs extending PST 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. DB·Cooper-432