Part 71, page 345
Document date 7 May 1964
FBI 164-81, Vault Part 71 p. 345 (DB Cooper-30630), Report, dated 7 May 1964, serial FC 751-1-1 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-71/pages/345
Transcript
The scan is the source; the transcript is machine-generated from it.
Y-axis (left): Scale markings visible at approximately 6000, [guess: 5000], [guess: 4500], with additional markings at intervals down to near 0. Labels near top curves: hp
X-axis (bottom): Time axis labeled "IRIG TIME" Time markings: 12:06:40 ... :50 ... 12:[guess: 06]:50 ... :10 ... :20 ... :30 ... :40 ... :50 ... 12:08:00 ... :10 ... :20 ... :30 ... :40 ... :50 ... 2:09:0[guess: 0]
Annotation in center-right area: AFT AIRSTAIR POSITIONS
Two primary curves plotted: - Upper curve: starts around [guess: 5500-6000], dips slightly, then rises and levels off around [guess: 4800-5000] before rising again toward the right side. - Lower curve: oscillating/noisy signal near the bottom of the chart, showing irregular fluctuations.
Title block (bottom left): CALC: [illegible] | US | [guess: 2-7-64] | REVISED | DATE | AIRSPEED EFFECT ON FREE-FLOATING | T&T-72 CHECK: [guess: LS] | | 4-8-[guess: 64] | | | AFT AIRSTAIR | [guess: NATION] APPD: [guess: GR] | | 4-3-[guess: 64] | | COND 12[illegible] | TEST 10[guess: 63] | D6-7777 APPD: | | [illegible] | | THE BOEING COMPANY | | PAGE | | | | SEC [guess: 1.21.1X] | | [guess: 12]
Footer left: TD 1053-R-5 Footer center: K+E ALBANENE 1 TRACING PAPER 71404 Footer right: DB Cooper-30630