F-Line to Dudley
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They need to get reps at 125 MPH, since that is the design speed for all single-level Amtrak coaches (Amfleets, Metroliners, Horizons, Viewliners, Ventures, Airos) regardless of what their home corridor's speed is. The Midwest and California Ventures also got a lot of testing reps on the NEC before they graduated to their state corridors, because they're >95% identical under-the-hood to the NEC Airos. It helps that the NEC for better part of a decade has almost always been testing something day and night (be it Acela II's, Viewliner II's, Ventures, cab car conversions of retired HHP-8 and P42 locomotives, or Amfleets and Metroliners fresh out of heavy repair), and has built-in schedule slots and assigned crews on a near-daily basis for doing that testing. You'd have to draft slots and assemble a crew board from scratch to do it in any other territory; it's plug-and-play on the NEC by simply feeding the existing slots with an ever-differing cast of new equipment. So every piece of equipment excluding the next-gen bi-level order (which won't fit East Coast clearances) will test on the NEC first as a matter of practicality.Err, I kinda doubt that this set will be particularly representative of what we should expect in NEC service, if they're bringing this up here for performance benchmarks? The Cascades sets are pure diesels, without the pantograph or aux power cars. What could they accomplish with it, other than a little marketing for "this is whats coming"?
That said... the electrified Airos are meant to go with a diesel Charger to basically create a dual mode set. Whats the possibility of Amtrak matching "plain" non-APV Airo sets (from future options) with the ACS64, which had no future in a pure Airo environment?
They will certainly test them with the Sprinter electrics to test fleet compatibility...probably test with the old Genesis P42 and P32 diesels, too. Anything that's not outright retired (the Sprinters are sticking around with long-distance NEC trains, and the Genesis will malinger for several more years as a protect and supplemental fleet) could end up pulling an Airo set in revenue service as a necessity (e.g. the NEC Airos preceding the Charger 42E dual-modes in delivery/acceptance, future non-APV options) or in a contingency (e.g. breakdowns, equipment shortages).
