Part 110, page 273

Document date 2 December 1971

Open in FBI Vault (Part 110, page 273 of the PDF)

FBI 164-81, Vault Part 110 p. 273 (DB Cooper-573), Report, dated 2 Dec 1971 — cooper.theunsolved.net/parts/Cooper-Part-110/pages/273

Transcript

The scan is the source; the transcript is machine-generated from it.

SE 164-81

---

On several occasions [REDACTED] extended the rear stairs while in flight. This was done at speeds of approximately 150 knots. Opening the rear stairs in flight at speeds at 150 to 170 knots would not suck any items from the passenger cabin. There would be a slight change in pressurization, but this would not remove any papers or cushions from the passenger cabin.

---

b6 b7C

---

DB Cooper-573

---

- 279 -

AI notes

Commentary by the AI model that transcribed this page. It may bring in context the page itself does not state. The scan is the source; the transcript is machine-generated from it.

FBI Seattle field office case number for the D.B. Cooper investigation. A redacted individual describes multiple occasions of extending a Boeing 727 rear airstair in flight at approximately 150 knots. States that opening the rear stairs at 150–170 knots would not create enough suction to remove items, papers, or cushions from the passenger cabin, though a slight pressurization change would occur. FOIA exemption codes b6 (personal privacy) and b7C (law enforcement – personal privacy) indicating redaction justification. Bates-style document identifier stamped at bottom right. Original page number from the source FBI document.

Left edge shows dark microfiche/photocopy artifacts
Name/identifier redacted with black box between 'occasions' and 'extended'
Mostly blank page with text only in upper portion