Originally Posted by
UAL T38 Phlyer
The cabin outflow valve in the Lear family is a piece of plastic, and can fail quickly to leave a 3-inch hole in the cabin and outside air. You could lose all pressurization in as little as 3 seconds, by my estimate, at FL410.
Are you serious? Have you ever seen a outflow valve from a lear? They are most definitely not a weak point and they are not made out of plastic. It's always amazing the general lack of system knowledge some pilots have.
This incident was the result of a slow loss of cabin pressure and that's all I can say.
The claxon you hear is a cabin altitude warning not overspeed. You can notice in the tape that he is able to silence the horn. You can not silence the overspeed and the two have different sounds.