One of the variants of the Metroliner, the SA227-AT Expediter, is a dedicated cargo aircraft with strengthened floors, an increased MTOW, and a windowless cabin.
However, despite being a cargo aircraft with absolutely no provision for the carriage of passengers, it appears, bizarrely, to still have been built with hatches for overwing exits!
(Image by YSSYguy at Wikipedia, via YSSYguy at Wikimedia Commons.)
Why are these hatches still included when there are no passengers to evacuate through them and cutting them into the aircraft's hull weakens its overall structure and requires extra time and labor during construction?