While flying on an IFR flight plan last Thursday over NC, talking to RDU approach, I heard the following (more or less): aircraft: "Mayday Mayday Mayday 360XS has experienced a total loss of power, the pump is broken and I'm going down" <I guess loss of oil pressure?> controller: "Aircraft calling Mayday please repeat"  aircraft: "360XS has an engine failure and I'm going down, where is the nearest airport?" another aircraft: "Allegiant XXX 130 for 10" controller: