Whats so bad about Overspeed?

It tensions the whole body of the aircraft. Read this short article to understand it better
➡ http://en.wikipedia.org/wiki/Overspeed_(aircraft)

Guest wrote:

What's so bad about Overspeed? The only thing I noticed is that it makes an annoying buzzer sound. But what does it do to your plane?

1. High speed over stresses the airframe of the aircraft from impact pressure of the air, especially at lower altitudes.

2. High speed make the flight controls very sensitive so that small deflections can create high G loads on the airframe.

3. High speed reduces the tolerance the aircraft has for absorbing turbulence.

4. On jet aircraft, the air above the wing travels faster than the air below the wing. At high speed, the air flow goes supersonic and creates a shock wave. The center of lift of the wing also moves rearward and nasty aerodynamic things start happening(on an aircraft that is not designed to fly supersonically). Mach tuck.
➡ http://en.wikipedia.org/wiki/Critical_mach
➡ http://en.wikipedia.org/wiki/Mach_tuck

That's why the manufacturers flight tests the aircraft, determine the limits to keep everyone safe and marks them as a aircraft limitation.

Plus you may have some 'splaining to do. The planes the company I work for tells on you if you have this occur (flight data computer which is pulled and analyzed every two weeks). Wouldn't want to have to get face time with the chief pilot for placing the aircraft outside of it's safe flying envelope filled with a bunch of paying passengers. Might turn out to be a short airline career.