Now the questions is would the software trigger the warning in this case?
Oddly enough, I thought of Providence when I was writing about Tenerife. From the older NTSB animations I’ve seen, but not knowing exact locations against time, all I can say is “I think so”.
It depends on just when 1448 busted the active. Where was FedEx at that precise moment?
If 1448 busted the active before FedEx started moving then FedEx (and 1448) would get a Runway Warning as soon as FedEx accelerated to, say, 30 knots.
If 1448 busted after FedEx started moving then 1448 (and FedEx) would get a Runway Warning the instant the Hold Bar was crossed, and before sticking his nose onto the runway.
This latter is, I recognise, a possible ‘problem’ window. Worst case? FedEx may get a Runway Warning pretty close to V1, but then again, 1448 would have hit the brakes hard (I’d like to think) so the worst case is a high speed FedEx reject on a clear runway.
PS. And with Ground Marker 1448 wouldn't have got lost in the first place.
