C206 TAXIING OUT FOR TKOF WAS BLOWN UP ON ITS R WING AND NOSE BY THE JETBLAST OF AN EXECUTIVE JET DOING AN ENG RUNUP TEST.

Narrative

AFTER RECEIVING CLRNC FROM LGB GND CTL TO TAXI TO THE ACTIVE RWY FOR DEP; I PROCEEDED VIA THE APPROPRIATE TXWYS TO THE ASSIGNED CLRNC POINT. WHILE TAXIING ON A DESIGNATED TXWY; I ENCOUNTERED JETBLAST FROM 1 OF 2 JETS POSITIONED APPROX 250 FT S OF MY TAXI POS AND TXWY. ONE OF THE JETS; UNBEKNOWNST TO ME; WAS PERFORMING ENG THRUST TESTS OF ITS R ENG; WHICH WAS EXPELLING THE THRUST ACROSS THE TXWY I WAS USING. PRIOR TO ENCOUNTERING THE JETBLAST; I HAD MADE EYE CONTACT WITH 2 SAFETY LOOKOUT PERSONNEL OF THE SITE WHERE THE ENG TESTS WERE BEING PERFORMED. I RECEIVED NO INDICATION FROM EITHER OF THE SAFETY LOOKOUTS REGARDING THE JET BEING PWRED UP AND ITS EXHAUST BEING BLOWN/DIRECTED ACROSS MY PATH. I OBSERVED THE TXWY AHEAD OF ME AND SAW NO INDICATION OF JETBLAST OR TURB XING MY PATH. ALSO; I HAD RECEIVED NO CAUTION OR WARNING FROM GND CTL REGARDING POSSIBLE JETBLAST. GIVEN THE ABOVE FACTORS; I DECIDED TO CONTINUE TAXIING (SLOWLY) ON THE TXWY. UPON REACHING A POS WHICH PLACED ME DIRECTLY BEHIND THE JET ACFT; STILL APPROX 250 FT AWAY; THE C206 I WAS OPERATING WAS VIOLENTLY BLOWN SEVERAL FT TO THE R AND ROLLED TO THE R SIDE. THE L WINGTIP/WING BEGAN TO RISE UPWARD AND THE R WINGTIP STRUCK THE PAVEMENT. THE C206 THEN NOSED OVER AND THE PROP STRUCK THE PAVEMENT. THE AIRPLANE THEN FELL BACK ONTO ITS LNDG GEAR; WAS BOUNCED ABOUT MOMENTARILY; THEN CAME TO REST IN THE UPRIGHT POS. MY DECISION TO CONTINUE TAXIING MY ACFT BEHIND THE JET WAS BASED ON THE FOLLOWING: 1) NO CAUTION OF JETBLAST FROM THE TWR. 2) NO WARNING GIVEN TO ME OR INDICATED TO ME BY THE SAFETY LOOKOUT PERSONNEL. 3) NO INDICATIONS OF JETBLAST ACROSS THE TXWY AHEAD OF ME. 4) THE DISTANCE (APPROX 250 FT) THAT I WOULD BE XING BEHIND THE JET. I DON'T FAULT ANY PARTICULAR ONE OF THESE FACTORS (OR LACK OF); HOWEVER; IT WAS THESE FACTORS THAT I TOOK INTO CONSIDERATION WHEN MAKING MY DECISION. HAVING SINCE THOUGH ABOUT THE INCIDENT; I REALIZED THAT IF I HAD JUST STOPPED ON THE TXWY PRIOR TO REACHING THAT CRITICAL POINT; AND CALLED UP THE TWR TO ASK THE STATUS OF THE JET'S OPS; THIS WHOLE INCIDENT MAY HAVE BEEN AVOIDED.