Narrative:

I set up and entered a downwind approach to runway 17. A helicopter called 'departing 17.' I then made a radio call that I was downwind runway 17. I flew a tight pattern (roughly 1/2 mi) to avoid a collision in the traffic pattern; if (I was unknown to the helicopter's intentions) the helicopter was going to remain in the traffic pattern. After I turned and then called for the base leg; I heard the helicopter call downwind runway 17 nonstandard pattern with right turn; while I was in a standard pattern with left turns; but was unable to find the helicopter in the pattern. I then turned final and was on a very short final when I heard the helicopter make a radio call for base runway 17. I looked out my right window to see the helicopter 500 ft and closing. The course was not collision; but was too close for comfort. I made the radio call for short final runway 17; and as I made the call; the helicopter performed a 360 degree turn in the pattern for spacing. After that; the helicopters made standard traffic patterns for the remainder of the day. The situation was corrected; but part of the problem was the helicopter pilot not listening to other radio calls. I have been flying at low country regional airport for 3 months and have had at least 1 near miss (most of them in or near the traffic pattern) every month. Low country regional airport is a busy airport for all types; category; and class of aircraft. I feel an ATC tower would alleviate these problems.

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Original NASA ASRS Text

Title: PLT OF SMA REPORTS NMAC IN PATTERN WITH HELI FLYING NON-STANDARD RIGHT HAND PATTERNS AND NOT RESPONDING TO CTAF TRANSMISSIONS.

Narrative: I SET UP AND ENTERED A DOWNWIND APCH TO RWY 17. A HELI CALLED 'DEPARTING 17.' I THEN MADE A RADIO CALL THAT I WAS DOWNWIND RWY 17. I FLEW A TIGHT PATTERN (ROUGHLY 1/2 MI) TO AVOID A COLLISION IN THE TFC PATTERN; IF (I WAS UNKNOWN TO THE HELI'S INTENTIONS) THE HELI WAS GOING TO REMAIN IN THE TFC PATTERN. AFTER I TURNED AND THEN CALLED FOR THE BASE LEG; I HEARD THE HELI CALL DOWNWIND RWY 17 NONSTANDARD PATTERN WITH R TURN; WHILE I WAS IN A STANDARD PATTERN WITH L TURNS; BUT WAS UNABLE TO FIND THE HELI IN THE PATTERN. I THEN TURNED FINAL AND WAS ON A VERY SHORT FINAL WHEN I HEARD THE HELI MAKE A RADIO CALL FOR BASE RWY 17. I LOOKED OUT MY R WINDOW TO SEE THE HELI 500 FT AND CLOSING. THE COURSE WAS NOT COLLISION; BUT WAS TOO CLOSE FOR COMFORT. I MADE THE RADIO CALL FOR SHORT FINAL RWY 17; AND AS I MADE THE CALL; THE HELI PERFORMED A 360 DEG TURN IN THE PATTERN FOR SPACING. AFTER THAT; THE HELIS MADE STANDARD TFC PATTERNS FOR THE REMAINDER OF THE DAY. THE SITUATION WAS CORRECTED; BUT PART OF THE PROB WAS THE HELI PLT NOT LISTENING TO OTHER RADIO CALLS. I HAVE BEEN FLYING AT LOW COUNTRY REGIONAL ARPT FOR 3 MONTHS AND HAVE HAD AT LEAST 1 NEAR MISS (MOST OF THEM IN OR NEAR THE TFC PATTERN) EVERY MONTH. LOW COUNTRY REGIONAL ARPT IS A BUSY ARPT FOR ALL TYPES; CATEGORY; AND CLASS OF ACFT. I FEEL AN ATC TWR WOULD ALLEVIATE THESE PROBS.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.