tobbe490 Posted February 17, 2016 Report Posted February 17, 2016 Suddenly my Boing 777 doesn´t work like before. In the FMC I get the message "PERF/VNAV unavailable" and "Not on intercept heading". Can somebody help me? Quote
daycartes Posted February 19, 2016 Report Posted February 19, 2016 Your flight course looks like you are going to go back on yourself so perhaps it refuses to calculate it. Perhaps you haven't set the ILS it won't be able to calculate if some other input is lacking so you might look at that. You could try a reinstall. You could also check your nav database is OK Sent from my HTC One M9 using Tapatalk 1 Quote
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