Originally Posted by
callum91
What I still don’t understand is just because the FDPS couldn’t deal with 1 FPL out of the thousands in the system at that time, it decided that forcing the whole system to revert to manual mode is preferable to just displaying the potentially incorrect flight data to ATCOs for that 1 flight. Bearing in mind that ATCOs safely deal with dodgy flight plans or flights with no FPL tactically on a daly basis anyway.
Indeed. Unfortunately the design of that part is one of the questions left till later. Understandable as that is on the Design Authority not NATS.
However in context you have at least 30 minutes to fix it before the data starts to become stale and probably 4 hours before you really start to impact on the dependent ATCO facing systems so that system design might be appropriate if you can deal with it quickly. In the event we know that they didn't but exactly why is also left until later.