View Full Version : FMC and CDU software, 747
blue up
13th Jan 2020, 14:15
Could any kind soul tell me what the story is with FMC and CDU interchangeability on a 747-400? The centre CDU doesn't fill any of the FMC functions, only ACARS. Does it have a different software load as a result, rendering it unusable as a hot spare down-route? Can it be reconfigured? Is the hardware different?
Many thanks.
B
spannersatcx
13th Jan 2020, 15:13
No difference it's done by pin programming.
blue up
18th Jan 2020, 11:26
Thanks for the info.
It's for a Sim using real LRUs. One of the keypads has a failed dimmer and they are not available direct from the manufacturer, only through the OEM manufacturer of the CDUs. I may have to cannibalise a couple of duff units. Time will tell.