PA34 AND MIL HELI HAD NMAC AT BFM.

Narrative

AT ABOUT 7 OR SO MI SE OF THE MOBILE DOWNTOWN ARPT; MOBILE APCH GAVE ME A R TURN ON AN INTERCEPT HDG FOR THE ILS 32 LOC. THEN; MOBILE APCH CLRED ME FOR THE ILS 32 APCH. (AS I STARTED TO MAKE THE R TURN; THE AUTOPLT UNCOUPLED; WOULD NOT COUPLE AGAIN AND I HAD TO HAND FLY THE REST OF THE APCH. ALSO; I WAS GETTING CONFLICTING INFO FROM MY NAV EQUIP; I WAS CONCERNED ABOUT THE NAV EQUIP WORKING PROPERLY; AND I WAS HAVING TO CHK THE NAV EQUIP AGAINST MY WET COMPASS.) THEN MOBILE APCH INSTRUCTED ME TO CALL THE BFM TWR. I RADIOED THE BFM TWR AND INFORMED THE TWR THAT I WAS ON FINAL FOR THE ILS 32 APCH TO MOBILE DOWNTOWN. THE BFM TWR RADIOED BACK. AT THIS TIME; I CANNOT STATE WITH 100% ACCURACY WHAT I WAS TOLD BY TWR. HOWEVER; I REMEMBER THAT I WAS UNDER THE DISTINCT IMPRESSION THAT I HAD BEEN CLRED TO LAND. (I AM VERY AWARE THAT YOU ARE NOT TO LAND AT A CTLED ARPT WITHOUT A CLRNC TO LAND.) I PROCEEDED WITH THE APCH AND I BROKE OUT OF THE CLOUDS ABOUT 2 OR SO MI FROM THE RWY AND AT ABOUT 800 OR SO FT. (EVEN THOUGH I WAS UNDER THE CLOUDS; IT WAS STILL HAZY.) AFTER SPOTTING THE RWY; I BEGAN TO SET THE AIRPLANE UP FOR LNDG. THEN; I BEGAN TO SEE A FLASHING LIGHT IN THE MIDDLE OF THE RWY AT THE APCH END. BUT; AT THAT POINT; I COULD NOT TELL WHAT IT WAS; OTHER THAN A FLASHING LIGHT. AS I CONTINUED THE APCH; I COULD TELL THAT THE FLASHING LIGHT WAS ON A MIL HELI. AT THAT POINT; SINCE I DID NOT KNOW WHAT WAS TO MY R OR L AND THE HELI WAS NOT MOVING; I FELT THAT IT WAS SAFER TO CLB AND FLY OVER THE HELI RATHER THAN TURNING R OR L. I ADDED PWR; PULLED THE NOSE UP AND CLBED; OVERFLYING THE HELI A FEW HUNDRED FT. SINCE RWY 32 IS A LONG RWY; AFTER OVERFLYING THE HELI; I LANDED LONG ON RWY 32. I DO NOT REMEMBER HEARING THE TWR CTLR TALKING WITH THE HELI PLT ON APCH. AFTER LNDG; THE CTLR IN THE TWR ASKED ME WHY I DID NOT RPT LEAVING THE HECKL INTXN ON THE APCH. I TOLD HIM THEN; AND I AM STATING NOW; THAT I DID NOT HEAR THE CTLR INSTRUCT ME TO RPT LEAVING THE HECKL INTXN. I AM NOT SAYING THAT HE DID NOT GIVE THAT INSTRUCTION. I AM STATING THAT I DID NOT HEAR THAT INSTRUCTION; THAT I DID NOT READ THAT INSTRUCTION BACK TO THE CTLR; AND THAT I WAS OPERATING THE AIRPLANE UNDER THE BELIEF THAT I HAD BEEN CLRED TO LAND. WHILE TAXIING; THE TWR CTLR INSTRUCTED ME TO CALL THE TWR FROM THE FBO.