The 'twinjet' fleets are leading a charmed life as we speak, much as the -400 used to. From talking to an AOA bigwig recently, (despite the warning that if he told me the real truth he would have to kill me), I understand that there is going to be quite an uplift in hours expected in return for a reasonable but not ground busting pay increae + age 65.......THEN we'll see how happy the twinjetters are with 8 days off a month.....