What was found
NR 1 ENG FLAME-OUT ON DESCENT, ENG RESTART UNSUCCESSFUL. MX R & R THE HMU & EEC. ENG BOROSCOPE WAS PERFORMED, NO TROUBLE FOUND. FUEL STRAINER & MAIN FUEL FILTER REMOVED & INSPECTED, CHECKED GOOD. A FUEL SAMPLE SUBMITTED TO BOEING. TEST FLIGHT WAS CONDUCTED. FUEL SAMPLE ANALYSIS DID NOT DISCLOSE ANY ABNORMALITIES. HMU WAS TESTED & DISASSEMBLED AT THE VENDOR FACILITY & NO DISCREPANCIES FOUND. EEC WAS SENT TO THE VENDOR FOR TESTING & RETRIEVAL OF NVM, NO DISCREPANCIES NOTED. THE QAR/ACMF DATA WAS STUDIED IN DETAIL WITH INCONCLUSIVE RESULTS. THE CAUSE FOR DISCREPANCY IS NOT UNDERSTOOD. BOEING IS CONSIDERING ADDING ADDITIONAL SIGNALS TO THE DFDR AND QAR SYSTEMS.