There would not be enough Nova3s to replace all the diagrams, so still a mix of Mk5s/185 as per the current Manchester-Scarborough route.
Piccadilly guards could still work the 185 diagrams, and any Airport 185 work be worked by any depot that needs it. Although, as its only one train per hour now to Manchester Airport from the north East, it's really more of a branch than core route!
Whilst that is true, it limits the usefulness of the crew that only sign 185’s when it comes to things such as engineering works, spare turns and depot cross-cover. Effectively making train crew less efficient when things do go wrong.
You also end up in situations where only one diagram will cover the section for route retention and if you’re on leave, or the link changes, you end up completely missing the route retention turn and then competency lapses.
As I've said before and I'll say again, a simplified emergency timetable. Simple shuttle services, maximum train lengths (i.e. 802 or 2x185). Total withdrawal from Manchester Airport as it's a waste of diagrams due to duplication.
Then start sorting things out ready for restoration of service.
I’ll also repeat what I’ve said before in that emergency timetables do nothing for passenger experience. The trains might run reliably but it seriously annoys passengers having to change trains 3 times (eg Hull to Leeds, Leeds to Piccadilly, Piccadilly to Airport), particularly when you’re running those trains with large almost hourly gaps between connections
They also lead to horrendous overcrowding even with the trains at maximum length. In the previous amended timetable I’ve had to leave passengers behind from the first station due to dangerous overcrowding particularly whenever there was a major event happening such as a concert or football match. All you end up doing is p*ssing off your existing passengers, and leaving them with stupidly long waits for the next service and multiple connections.
Cutting off the Airport depot would also be a complete waste of staffing hours for the large number of guards based there. It also doesn’t save much traincrew as it’s one guard and one driver an hour roughly between MAN and MIA (not including the Anglo-Scots) and that’s largely due to the just short of 30 minute turnarounds which are used for servicing the 185 fleet CET tanks.