October 1, 201114 yr I don't follow, what does it have to do with it...? Sorry. was responding to OP's first sentence in the first post. Regards Jay Cargo
October 1, 201114 yr Did you notice you can also fly an ILS (!) using IAN? Just retune your NAV radio to some wrong frequency and hitting APP will happily arm FAC/G/P. So IAN seems to be some sort of fallback mode there. Not sure if the real thing would allow that. Kinda weird methinks. Useful if the glideslope is inop and you need to shoot a LOC approach. However, if you use FAC rather than VOR/LOC, you must watch the LOC scale carefully in case the system exceeds tracking tolerances. David Zhong New video every Thursday: Aircraft Lighting - Boeing 777
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