The Apollo 1 fire kills three astronauts
On this day · 27 January 1967
A routine ground rehearsal turned fatal in seconds when a spark met a cabin pressurized with pure oxygen.
On January 27, 1967, a flash fire swept through the Apollo 1 command module during a preflight test on the launch pad at Cape Kennedy, killing all three crew members: commander Gus Grissom, senior pilot Ed White, and pilot Roger Chaffee.
The spacecraft was sealed and pressurized with pure oxygen at 16.7 psi — above sea-level pressure — so when an electrical fault ignited, materials that would barely smolder in normal air burned ferociously. Within seconds the cabin was an inferno, and the inward-opening hatch could not be released in time.
The disaster halted crewed Apollo flights for nearly two years. NASA overhauled the capsule with a redesigned outward-opening hatch, less flammable materials, and a safer launch-pad atmosphere — changes that helped carry later crews safely to the Moon. The price of those lessons was paid on a pad that never left the ground.
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