What did the declassified documents reveal?

COLD OPEN This is a declassified Central Intelligence Agency memorandum titled “TAGBOARD Missions – Summary of Flights,” dated March twentieth, nineteen seventy. The document provides a brief operational overview of the TAGBOARD high‑altitude drone program, including its first over‑flight of South China on November tenth, nineteen sixty‑nine, and a subsequent test flight on February twentieth, nineteen seventy. The record is hosted at the Black Vault archive. PROVENANCE The memorandum was released under a Freedom of Information Act request, identified in the release as CIA‑RDP79B01709A000100060007‑9. The declassification authority approved the material for public release on May twenty‑eighth, two thousand three. The full text is available through the Black Vault’s digital collection. THE DOCUMENT The memorandum opens with the agency header: “RECONNAISSANCE OFFICE, Washington, District of Columbia, March twentieth, nineteen seventy.” It is addressed to the Assistant to the President for National Security Affairs, the Attorney General, the Deputy Secretary of Defense, the Under Secretary of State for Political Affairs, the Director of Central Intelligence, and the Executive Secretary of the National Security Council Committee. The subject line reads: “TAGBOARD Missions.” The memorandum states: “Following is a brief summary of the November tenth, nineteen sixty‑nine operational mission and the February twentieth, nineteen seventy test mission. A summary of all flights to date is attached.” It continues: “TAGBOARD flew its first limited operational mission over South China on November tenth, nineteen sixty‑nine. Launch and early flight were successful as the drone obtained the programmed altitude of eighty‑four thousand feet and a cruise Mach of three point two seven. During the terminal phase of the flight the drone was not acquired, visually or electronically, and the payload was not recovered. National Security Agency reported no signals intelligence that could be correlated with the mission. The drone’s position was fixed at only fifty miles off the island of Hainan and eighty miles from the Chinese mainland, just prior to the drone’s telemetry being turned off on the inbound track well within range of coastal air‑defense radars. The drone’s operating altitude, speed and small radar cross‑section—approximately two‑tenths of a square meter frontal area with a fifteen‑degree depression angle—give it a high probability of survival.” The memorandum then explains the failure: “Investigations and laboratory simulations now indicate that computational errors in the drone’s inertial navigation system prevented the drone from flying the programmed route. Self‑destruction probably occurred after fuel exhaustion upon descent at the pre‑set altitude. Software changes have since been made and tested to correct the computational errors, and a ‘fail‑safe’ feature has been incorporated in the INS that will provide positive control of the drone’s flight path.”…

Why was this case declassified?

This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

CIA Tagboard Missions – Summary Of Flights

◆ BLUF — The short version

COLD OPEN This is a declassified Central Intelligence Agency memorandum titled “TAGBOARD Missions – Summary of Flights,” dated March twentieth, nineteen seventy. The document provides a brief operational overview of the TAGBOARD high‑altitude drone program, including its first over‑flight of South China on November tenth, nineteen sixty‑nine, and a subsequent test flight on February twentieth, nineteen seventy.

Date: AUG 6 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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What was CIA Tagboard Missions – Summary Of Flights about?: COLD OPEN This is a declassified Central Intelligence Agency memorandum titled “TAGBOARD Missions – Summary of Flights,” dated March twentieth, nineteen seventy. The document provides a brief operational overview of the TAGBOARD high‑altitude drone program, including its first over‑flight of South China on November tenth, nineteen sixty‑nine, and a subsequent test flight on February twentieth, nineteen seventy.
Why was this case declassified?: This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. Storyflo narrates it directly from the public release.

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