DOUBLE FLAMEOUT AND INSTANTANEOUS RELIGHT.

Narrative

ENGS #1 AND #2 FLAME OUT DURING FLT. ON DSCNT; OCCASIONAL LIGHT TURB; INTERMITTENT LIGHT PRECIPITATION AT FL280; ANTI-ICE SELECTION ON. AT ABOUT FL15O; DURING A SHORT PERIOD OF MODERATE PRECIPITATION; SEVERAL EAD ALERTS APPEARED. ENG #1 RPM LOW; ENG #2 RPM LOW ELECTRICAL; AIR. IT WAS NOTED THAT THE EGTS ON ENGS #1 AND #2 WERE LOW (30 DEGS). IT WAS THEN APPARENT THAT ENGS #1 AND #2 HAD FLAMED OUT; TIME XX02Z. ACFT ATTITUDE NORMAL; THROTTLES IDLE; AIRSPD DECELERATING BELOW 300 KTS; AIR TEMP PLUS 3 DEGS. AT APPROX 12000 FT IN THE CLR; ANTI-ICE OFF; IGNITION OVERRIDE WAS SELECTED. AIRSPD 260 KTS; THROTTLES IDLE; AIR TEMP PLUS 13 DEGS. THERE WAS A NORMAL RESTART AT XX03Z. FLT COMPLETED TO A NORMAL LNDG. SUPPLEMENTAL INFO FROM ACN 304362: DSNDED FROM CRUISE ALT OF FL360 FOR APCH TO NRT. ANTI-ICE ON AT FL280; ENTERED CLOUDS 1-2 MINS LATER. OCCASIONAL LIGHT TURB IN DSCNT; INTERMITTENT LIGHT PRECIPITATION IN CLOUDS. CALLBACK CONVERSATION WITH RPTR ACN #304361 REVEALED THE FOLLOWING INFO: THE RPTR IS A CAPT ON THE MD-11 FOR A MAJOR UNITED STATES ACR. AFTER THIS INCIDENT; HE WAS IN A MEETING WITH HIS ACR; MCDONNELL-DOUGLAS; AND GENERAL ELECTRIC. THERE HE LEARNED THAT THE ENG IS SUSCEPTIBLE TO ICING OF THE STATORS WHICH ARE NOT ANTI-ICED; ONLY THE DOME AND THE COWL ARE ANTI-ICED. APPARENTLY THE ICE CAME OFF OF THE STATORS AND 'SNUFFED THE ENGS.' ENG IGNITION COMES ON WHEN ENG ANTI-ICE IS TURNED ON; BUT ONLY FOR ABOUT 1 MIN. THE ENGS FLAMED OUT QUITE SOME TIME AFTER THIS. THE ACFT WAS IN THE HVY RAIN FOR ONLY ABOUT 5 SECONDS. THE EGT'S WERE NOT 30 DEGS LOWER THAN #3; THEY WERE SHOWING ONLY 30 DEGS! 'THE RELIGHT WAS SO SMOOTH IT WAS EMBARRASSING!' NO ONE IN THE ACFT EXCEPT FOR THE 3 COCKPIT CREW MEN KNEW THAT ANYTHING HAD HAPPENED. THE ACFT WAS CAREFULLY INSPECTED; BUT COULD NOT LEAVE THAT NIGHT BECAUSE OF THE NORMAL CURFEW. IT FLEW HOME THE NEXT DAY. THE RPTR UNDERSTANDS THAT THE B747-400 WITH THE SAME ENGS HAS AN AUTOMATIC RELIGHT SYS THAT MAY BE INCORPORATED ON HIS ENGS AT SOME LATER DATE. THERE WAS NO DAMAGE TO EITHER OF THE ENGS.