February 29, 1964๐Ÿ‡บ๐Ÿ‡ธSighting
Military BaseHead of State

US: LBJ announces A-11 to mask A-12 sightings

President Lyndon B. Johnson revealed a secret high-speed aircraft named A-11, actually the YF-12 interceptor derived from the classified A-12, to explain away potential sightings of the latter from Area 51.

Date
February 29, 1964
Location
Washington, D.C.District of Columbia๐Ÿ‡บ๐Ÿ‡ธ
Type
Sighting
Country
๐Ÿ‡บ๐Ÿ‡ธ United States
Map

Background

Event Details

On February 29, 1964, President Lyndon B. Johnson conducted a press conference announcing that the United States had surpassed Soviet airspeed records multiple times using a covert plane dubbed the A-11. This was a deliberate pseudonym for the Air Force YF-12, a two-seat adaptation of the Lockheed A-12 designed for interception duties. Johnson stated it achieved speeds exceeding 2,000 mph at altitudes around 70,000 feet.

Technical Background

The YF-12 stemmed from the CIA's still-classified A-12 reconnaissance platform, with prototypes ordered in 1960 by modifying existing designs. It featured Pratt & Whitney J58 engines, Mach 3+ capabilities, and a service ceiling near 90,000 feet. Equipped for three AIM-47 missiles, it served as precursor to the SR-71. First flight occurred August 1963.

Strategic Purpose and UFO Relevance

The announcement aimed to conceal the A-12 program; observations of CIA/Air Force A-12 operations from Area 51, Nevada, could be ascribed to the publicized YF-12A at Edwards Air Force Base, California. This military maneuver likely reduced misidentifications of these advanced aircraft as unidentified aerial phenomena during Cold War tensions.

Significance

By attributing high-speed, high-altitude flights to a known U.S. asset, the disclosure mitigated potential UFO reports linked to black projects, highlighting intelligence-driven disclosure tactics.

Connections

More community notes about this entry

These are personal research notes that community members chose to publish. They are not an editorial publication by the platform.