alt Hacker NewsWe don't know how it failed. Maybe it displayed their lat/long perfectly but at the wrong altitude. We think of failure as obvious, but it is often nearly impossible to tell unless you are looking for it.
We don't know how it failed. Maybe it displayed their lat/long perfectly but at the wrong altitude. We think of failure as obvious, but it is often nearly impossible to tell unless you are looking for it.
Altitude is the least accurate dimension for GPS, and it's also the one dimension that's provided with great accuracy by a really simple mechanical gauge present in every aircraft. There should never be a situation where an incorrect altitude figure from GPS causes a problem.