73 hrs @ $40.
Paid monthly for the month you're in.
After probation pay lags a month. June flying paid in late July. So the transition from probation to regular pay causes a gap in pay of approx. 1 month. Bad deal. Good deal is that after you retire you get a paycheck a month later and by then your wife has probably forgotten about it. ;-)
I wouldn't lose sleep over understanding the pay lag issue before getting hired. Twelve months of property to figure it out.