RAF operates modified -500s to an MTOW of 245T. Max ZFW is 159T, if memory serves me correctly....I'll let you know again in 6 months!
T'would appear I should have read 'copters post first! Big problem with the tankers is that if you fill them with fuel (136T if memory serves me correctly), you bust the max AUW! Still, 125T does go an awfully long way...
