Boing in US...uses lbs...lbs are a weight (force)...MTOW.Airbus in Europe...uses kgs...kgs are a mass...MTOM.QEDLee Hetherington, PP-ASEL (KBED)

Hi fella'sSorry to disappoint you guys but the difference between MTOM and MTOW has nothing to do with aircraft makers.It's the Joint Aviation Authorities (JAA) making the JAR (European counterpart of the FAR) that defines all units as metric therefore MTOM. As Lee told us here above is about masses and not forces.Best regards,Amedee VermeireExelAviationGroup

Great read. Waiting for the release to put the knowlefdge into practice.Anfy N. b

Systems this, FMC that, who needs all this mumbo jumbo, just give me a nice looking model ;)Thanks for the manual guys, only problem is I've forgotten half of it already. I need something to practice it on!