I hear ya DC9...I had the same problem. In fact, I still have that problem, even w/ my airline job. I have been trying to ride our DC10's, particularly one of our three Dash 30's that we have in Pax service. I haven't been able to hitch a ride on one of the DC10-30's for 6 months because the flights are always oversold. So you see, even though you have standby priviliges, they don't always help you ride the old birds. On one hand, you hope the pax loads are light so you can get on. But on the other hand, you want to see those aircraft full since that's what pays your wages.