have just purchased the 737 for fsx.Iam on a learning curve with the fmc so iam doing it by the manual, in the cdu preflight procedure pos init page1 there are a set of boxed prompts into which the irs is installed. these boxes are not visible in my fmc is this by default if not will it cause problems iam aware this could be classed as a customer support problem but perhaps one of the forum members could if it mattered. frank cann

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