On Fri, Jun 6, 2014 at 3:50 PM, Richard Pieri <richard.pieri at gmail.com> wrote: > It's because > they're not really off. > If it's off enough to make an airline happy, it's not reporting anything, even *if* it's passively tracking -- Bill Ricker bill.n1vux at gmail.com https://www.linkedin.com/in/n1vux