I think Johnson might be right on this but it should definitely be resolved.
Once again referencing Negotiators Notepad 5-12:
Delivery of additional 76-seat aircraft is prohibited until SNB aircraft are first added to
the mainline fleet, and then, a simultaneous reduction of 50-seat aircraft is required. This
is an event-based process and not time or date-based. As Delta implements their
business plan and adds more SNBs, only then may they add more 76-seat aircraft, while
also removing 50-seat aircraft. Once a 50-seat aircraft is removed, the number of
allowable 50-seat aircraft is capped at that level until the next removal and so on. That
cap can then never increase.
Event based with no date attached. I looked in the Live Contract but could not find this - I did see the 2014 date mentioned with Block hour ratios but not in regard to small NB vs. additional 76 seaters.
Scoop