The Newtown Planning and Zoning Commission is meeting tonight.  One of the items on their agenda is an application for a Platts Hill and Orchard Hill roads homeowner to split his lot into 4 in order to bring the property into compliance.  The 26 acre estate has a cottage and a barn that was converted to a two-bedroom apartment without approval.  The homeowner would retain ownership of the 4 subdivided parcels.  At a previous hearing, some commission members raised questions about the only FAA-approved private airstrip in Fairfield County located on the land.  The owner said it's for his own single-engine plane and it's not part of the application.  The 2,000-foot-long, 200-foot-wide grass runway, registered as Flying Ridge Airstrip, is operational and up to code.