Typically at least 5 (and possibly more) Viewliner Is are expected to go through POH at Beech Grove this year. Usually the financial reports have the information about expected numbers.
There are 13 Viewliner Is scheduled for overhauls at Beech Grove in FY16. The normal number in recent years has been 12 ro 13 Viewliner Is per year, which works out to circa 4 year overhaul cycle with 50 Viewliner Is. So the Viewliner Is are now getting a new vinyl/paint job as part of the overhaul.
Meanwhile, the long wait for the release of the new diner cars drags on. and on...