Originally Posted by
mothergoose1
inevent of double fmgs fail,u gotta lift that guarded nav switch.tune the rmp and have good situational awareness.u cant be in that airspace no more.also u are unable rvsm as no autopilot aswell buddy.
Thank you mothergoose. I know you have your RMP available for radio tuning, but you have also the back up navigation with the remaining waypoints of your flight plan and with GPS available your accuracy would be probably High. My question is more related to the "legality" rather than "what to do". As you commented regarding the RVSM no doubts, no autopilots no RVSM, cristal clear; but in the RNAV I didn't find it.