AN ACR LR24 FREIGHTER FLC EXPERIENCED A DOUBLE FLAMEOUT WHILE FLYING OVER A TSTM AT FL410. THEY GOT THEIR FIRST ENG RELIT AT 13000 FT AND WERE ABLE TO RECOVER AND CONTINUE TO DEST.

Narrative

WE WERE IN CRUISE AT FL410 WHEN WE PENETRATED THE TOP OF A TSTM. WE REQUESTED AN IMMEDIATE CLB; BUT AS WE BEGAN THE CLB AN ENG FLAMED OUT. WE DSNDED INTO THE STORM; AND REQUESTED A VECTOR TO GET US OUT OF IT. AS WE WERE DSNDING IN THE TSTM; THE SECOND ENG FLAMED OUT. WE EXITED THE CLOUDS AND GOT 1 ENG RELIT AT 13000 FT. WE THEN STARTED THE OTHER ENG AND PROCEEDED TO OUR DEST. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR SAID THAT HE EXPECTED TO CLR THE TSTM WITHOUT DIFFICULTY UNTIL THE FIRST ENG QUIT. HE IS NOT SURE THAT THE IGNITION WAS ON; BUT HE IS SURE THAT THE ANTI-ICE SYS WAS NOT ON. WHEN THEY HAD DSNDED TO FL250 THEY FELL WITHIN THE ENG START PARAMETERS AND THEY BEGAN AN ATTEMPT TO GET A RELIGHT. THE FIRST SEVERAL ATTEMPTS FAILED AND THEY SHUT DOWN THE ENGS BEFORE ANY ATTEMPT EXCEEDED THE ENG TEMP LIMITS. WHEN THEY GOT THE FIRST SUCCESSFUL RESTART AT 13000 FT; THE ENG WAS VERY SLOW TO ADVANCE TO THE NORMAL IDLE PARAMETERS AND THIS SLUGGISH RESPONSE CONTINUED TO THE 100% PWR POS. THE SECOND ENG RESPONDED A LITTLE BETTER AND ONCE THE ENGS OPERATED IN NORMAL CRUISE FOR A SHORT TIME THEY RESPONDED NORMALLY. THE FLC THEN DECIDED TO CLB TO FL250 AND CONTINUE TO THEIR DEST. THE MAINT TECHNICIANS COULD FIND NO PROBS WITH THE ENGS DURING THEIR GND CHKS. IN ADDITION TO THEIR ENG PROBS; THE FLC FOUND THAT THE TSTM ACTIVITY INTERFERED WITH THEIR COM WITH THE ARTCC CTLR. THE INTENSE ELECTRICAL ACTIVITY CAUSED LOW STATIC TO BLOCK OR DISTORT XMISSION AND RECEPTION ON THEIR VHF RADIOS. THEIR INITIAL CALLS AND THE CTLRS' RESPONSES WERE NOT UNDERSTANDABLE; APPARENTLY. THE RPTR SAID THAT THIS SIT CONTINUED FOR ABOUT 10000 FT DURING THE DSCNT. THIS FO SAID THAT THEY DID NOT DECLARE AN EMER; BUT THEY DID DESCRIBE THE SIT TO THE CTLR WHEN THEY WERE ABLE.