Originally Posted by
8che
Of course aircraft type is crucial here.
For info on B757/767/787/777/747 you still have full CAT3B autoland capability with total FMC failure !
RVSM is not affected by this either.
MNPS and oceanic ops are not approved without at least 1 FMC so would need your head examining to carry on and enter that airspace like this. Of course if already in then crack on as best you can.
BRNAV in europe which is RNP5 so thats gone with the FMC's.
The 787 has 3 FMC's.....so job done
I am aware of that but don't know where to find this information. Could someone point it out to me. By the way, just the other day.....
"N662US, a Boeing 747-400 aircraft operated by Delta Airlines as flight DAL167, had departed Seattle-Tacoma Intl, WA, (KSEA) en route to Tokyo/New Tokyo Intl, Japan (RJAA). Approximately 60 nautical miles south southwest of Tofino, BC the flight crew declared an emergency due to a dual Flight Management System (FMS) navigation equipment failure. The aircraft circled south of Vancouver Island for approximately one hour to dump fuel in order to be within its maximum landing weight limitation. The aircraft returned to KSEA and landed without further incident.
The operator’s maintenance determined that the FMS was faulty. The number 1 FMS was replaced and tested, and the aircraft was returned to service the following day."