AI Summary
5 min readOn the night of January 27, 1986, Al McDonald, the director of Morton Thiokol's Space Shuttle Rocket Program, sat alone at a colleague's kitchen table in Titusville, Florida, holding his head in his hands. He had just learned that overnight temperatures at Cape Canaveral were expected to plunge below freezing. McDonald's company manufactured the thin rubber O-rings that sealed the joints on the shuttle's rocket boosters, and Thiokol's own testing had determined those O-rings became unreliable below 50 degrees Fahrenheit. If even one set failed during launch, the entire shuttle could explode. But McDonald knew that delaying the launch would be difficult. The Challenger mission had already been postponed once that morning due to technical issues, and with teacher Christa McAuliffe on board—the first civilian ever slated to fly into space—the launch had become a media circus. NASA was under intense pressure to avoid further delays, and asking them to postpone again could jeopardize Thiokol's relationship with its biggest client.
The Engineers' Warning
Continue reading the full summary in the app — free to try.
Read Full Summary →Free • No credit card required
Never miss an episode of American Scandal
Get every new episode summarized in your inbox — free, ~5 minutes to read.
No spam. Unsubscribe anytime.
What you'll learn
- 1 (00:00) **The Engineer's Dread** - Al McDonald, Thiokol's director, learns overnight temperatures will plunge below freezing, threatening the O-rings that seal the shuttle's rocket boosters.
- 2 (08:11) **The Emergency Teleconference** - Roger Boisjoly and Thiokol engineers present their case to NASA, arguing the unprecedented cold will make the O-rings too brittle to seal the booster joints.
- 3 (12:35) **The Management Caucus** - Thiokol executives go off-line to make a final decision, with senior VP Jerry Mason pushing for a launch despite the engineers' protests.
- 4 (14:59) **The Fatal Vote** - The four executives vote unanimously to recommend launch, with Bob Lund visibly surrendering to management pressure.
- 5 (16:03) **The Reluctant Signature** - NASA demands Thiokol's recommendation in writing, but lead manager Al McDonald refuses to sign, saying he won't be the one to answer for a disaster.
- 6 (17:04) **Ice on the Launch Pad** - ICE team leader Charlie Stevenson discovers the launch tower covered in 18-inch icicles and the sound suppression troughs frozen solid.
- 7 (21:41) **The Morning of Launch** - Despite widespread expectations of a cancellation, NASA proceeds with pre-launch protocol, and Commander Dick Scobee leads the crew to the orbiter.
+ Full timestamped outline available in the app
Guests on this episode
Show Notes
In the tense hours leading up to the Challenger launch, engineers and managers at NASA and its contractor Morton Thiokol heatedly argue over whether to move forward, despite freezing temperatures that threaten to compromise the rocket boosters’ O-Rings.
See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
More from this podcast
American Scandal →