[...]The fact that the US Army plans to purchase the UH-72B (based on the Airbus Helicopters H145 / BK 117 D2) as opposed to the UH-72A (based on the former Eurocopter EC145 / BK 117 C2) — is a major change, but one that no one seems to have noticed.[...]
Does seem strange that the Army would go to a different version this late in the buy. The logistics of the matter would argue against it. Then again given the operational tempo of the UH-72 fleet perhaps the "A" models will be retrofitted to "B" models as they go through major reset maintenance. Is that a realistic option?