With my profound maritime bias (Navy Pilot, retired) I'd like to see them use Leo's AW119 (just like the Navy's TH-73). There is precedent for that: Army adopted the TH-57 Sea Ranger / Bell 206B => TH-67 Creek in the early 1990's.
Sea Ranger had been used at Whiting Field since well before I got there (early 80's).
The Navy has the Instrument Training spec covered in that one. Army need not reinvent that wheel.
Originally Posted by Leonardo's blurb
The TH-73A is the first single-engine helicopter in decades to meet all IFR standards and be certified by the Federal Aviation Administration (FAA). It offers the Genesys advanced avionics IFR glass cockpit which includes four IDU-680 displays in a dual-sided PFD/MFD format with dual redundant ADAHRS, dual GPS/FMS, dual Data Acquisition Unit (DAU), and other supporting sensors. The Level A, IFR certified, IDU-680, is a large EFIS display that offers high-resolution LCD glass depicting 3D Synthetic Vision, Highway-In-The-Sky (HITS), Enhanced HTAWS, Integrated FMS, Hover Vector, and many more features.
And they have a simulator package already established.
If the Bell 505X can get a certified instrument package, though, that might also be a good choice.