I know for nonreving, you're assigned SA1-SA9, and within those codes it goes by date of hire, and then by check-in time.
For jumpseating on mainline though.. would someone who flies for Express (not wholly owned) get any priority for the jumpseat over non-US Air/non-Express guys? In other words, would a Colgan guy get priority over a Delta guy. Or is it strictly by check-in time? I asked the gate agent and he said he wasn't sure (

) and I don't want to get screwed so I need to know the rules. Thank you!
*I just realized I should've posted on the regional forum because mainline US Air pilots probably wouldn't know because it doesnt affect them.. can I ask a moderator to move this?