C210 AND AN ACR B737 HAD NMAC AT AUS.

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I FEEL THAT I HAD CLRNC FOR TKOF. A CLRNC OR INSTRUCTIONS FROM THE CTLR REQUIRES A REPLY AND I ACKNOWLEDGED MY CLRNC AND BOTH PLT PAX HEARD THE SAME INCIDENT AT AUSTIN ARPT (AUS) WED MORNING (APPROX XA35 AM LCL) ON JAN/WED/99; ON A RPTED NEAR MISS BTWN MY ACFT ABCD AND AN ACR JET. AFTER PREFLT AT THE FBO; AND PAX ABOARD; I CALLED CLRNC DELIVERY FOR MY CLRNC FROM AUS TO FTW. CLRNC RECEIVED AND WAS ADVISED TO GO TO TWR FREQ FOR TAXI AND RWY ASSIGNMENT. I WAS INSTRUCTED TO TAXI TO RWY 35; WHICH I DID. THE TWR ASKED ME MY POS SHORTLY AFTER THAT AND I WAS TOLD I WAS ON THE TXWY ALMOST TO RWY 35. HE SAID HE COULD NOT SEE ME AND THERE WAS ANOTHER ACFT DEPARTING RWY 31L. I ACKNOWLEDGED THAT WAS FINE AS I STILL HAD TO PERFORM A RUN-UP CHK OF MY ACFT. AFTER THE RUN-UP WAS COMPLETE; I DO NOT BELIEVE I TOLD HIM I WAS READY ON RWY 35; BUT MIGHT HAVE. ANYWAY; I WAS INSTRUCTED TO TAXI IN POS AND HOLD. I ACKNOWLEDGED POS AND HOLD 'BCD.' AS I WAS MOVING TO THE RWY FOR THE 'HOLD' POS THE CTLR ADVISED 'YOU ARE CLRED FOR TKOF RWY 35.' I ACKNOWLEDGED BACK 'BCD CLRED FOR TKOF.' I DID NOT HEAR ANY OTHER XMISSION BY THE TWR ON MY FREQ. I DID NOT TKOF IMMEDIATELY AS I LINED UP WITH RWY 35 FOR INST CHKS AND FINAL CHKS. I BEGAN MY TKOF ROLL AND USED MOST OF THE RWY BEFORE ROTATING. THE NEXT VOICE I HEARD WAS THE ACR AIRLINE PLT STATED HE HAD SEEN A C210 TAKING OFF AND HE HAD TO PULL UP TO MISS ME. I IMMEDIATELY TOLD THE TWR THAT I HAD CLRNC FOR TKOF. THEY ASKED ME IF I HAD SEEN THE ACR JET AND I SAID 'NONE OF US SAW HIM.' HAD HE BEEN THAT CLOSE; I WOULD HAVE SEEN; HEARD AND FELT HIM PASSING OVER ME. BOTH MY PAX ARE PLTS AND UNDERSTAND THE LANGUAGE AND PHRASES USED BY THE CTLRS. I BELIEVE THEY WILL CONCUR OR ACKNOWLEDGE WHAT THEY HEARD. I REGRET THIS INCIDENT VERY MUCH AS SAFETY IS VERY IMPORTANT TO ME FOR EVERYONE WHO FLIES AN ACFT AS PLT OR PAX. NEVER WOULD I HAVE TAKEN OFF IF THERE WAS THE SLIGHTEST DOUBT ABOUT MY BEING CLR TO TKOF. PLEASE ADVISE IF I CAN BE OF FURTHER ASSISTANCE IN THIS MOST UNFORTUNATE INCIDENT.