D.B. Cooper: the records behind an enduring mystery

The documented outline

On November 24, 1971, a man using the name Dan Cooper boarded Northwest Orient Flight 305 from Portland to Seattle. According to the FBI, he demanded $200,000 and parachutes. After the passengers were released in Seattle, the aircraft took off again, and he jumped during the next flight.

The FBI’s history page describes his identity and ultimate fate as unresolved. In 2016, the bureau redirected investigative resources to other priorities. This is a historical introduction, not a report of a new lead or a claim about any suspect.

Why the original record matters

The National Archives provides a starting point for the U.S. Attorney’s case file and links to digitized records. The FBI also publishes investigative material through its Vault. These collections let a reader move beyond a compressed retelling and ask where a particular detail first appeared.

A five-minute reading exercise

Choose one detail from a retelling and write it as a question. Find the original document offered as support. Note its date, author, document type, and what the writer could directly know. Does it record an observation, repeat a report, or propose a theory?

Now write two sentences: “This document says…” and “This document does not establish…” Keep those sentences separate. The exercise works even if your conclusion is that you need more context.

The useful contribution

An enduring mystery can collect layers of confident repetition. A contribution worth sharing might simply reconnect a familiar claim to its actual source, or explain why a popular excerpt is incomplete.

This page does not solicit amateur searches, contact with private people, or public suspect lists. Its purpose is to practice careful reading. If you have credible information about a real crime, use the responsible official reporting route.