What was found
AT FLT LEVEL 390 AT LEVEL OFF, NR 3 ENG FAILED, LESS THAN 2 MINS LATER NR 4 ENG FAILED. ALL ENG PARAMETERS PRIOR TO ENG FAIL WERE NORMAL. ENG''S RESTARTED BELOW F/L 220 AND PERFORMED NORMALLY. REMOVED AND REPLACED FUEL FILTERS ON ENG 3 AND 4 AS PRECAUTION, NO FAULT FOUND. INSPECTED SPECIFIC GRAVITY SETTINGS, CHIP DETECTERS AND C D P TUBES, ALL CHK OK. SUPED TANKS NO WATER FOUND. PERFORMED HIGH PWR RUN UP WITH BOOST PUMPS OFF, CHKD OK PER M/M 71-00-00.