While nose wheel shimmy doesn't necessarily mean you're in immediate danger, it's also not safe to fly on a plane with nose wheel issues that haven't been addressed.

A map of where the plane crashed near San Diego. FlightAware; FAA/AP “The next time he came out of the clouds, he went straight into the water. But after I saw this splash, about 6 seconds later ...

He achieved all of his victories flying the HD.1, and while it wasn't one of the top WWI fighter aircraft, it was a formidable plane. On one occasion, Coppens engaged a balloon in an unusual tactic.

While nose wheel shimmy doesn't necessarily mean you're in immediate danger, it's also not safe to fly on a plane with nose wheel issues that haven't been addressed.