What was found
KHUF - FLT 81475: NR 2 ENGINE FLAMEOUT AT CRUISE AT FLIGHT LEVEL 310, DESCENDED TO FLIGHT LEVEL 240. CHECKED RESTART PARAMETERS WERE NORMAL. RESTARTED NR 2 ENGINE AND ALL ENGINE PARAMETERS, OIL TEMPERATURE, PRESSURE, ETC., WERE ALL NORMAL. REMOVED MAIN FUEL STRAINER, INSPECTED, FOUND NO DEBRIS. REINSTALLED, PERFORMED ENGINE RUN IAW B727 MM 71-00. NO DEFECTS NOTED. COULD NOT DUPLICATE ENGINE FLAMEOUT. ALL PARAMETERS NORMAL.