Narrative:

An light transport was flying opposite direction. It had cancelled advisories several mins prior. It then flew over bar harbor airport without talking on unicom. This airport is very busy during summer and fall months. An small aircraft a on final to runway 4 tried to reach the light transport on unicom. If it hadn't been for this call, I would not have known the light transport was in the area. Based on the call from the small aircraft a to this light transport I started a descent. The light transport transited the area at 1500-2000 AGL without even talking on unicom. At the time they were 3 smas, a glider, and an light transport B all within 5 mi of the airport. I would like to see a published recommendation for flight around bar harbor/arcadia national park. At the time I was completing a scenic flight around the island with 3 passenger. I had on both rotating beacon strobes and landing lights. For the past 50 yrs people have been flying around the island in a clockwise manner and this has become accepted practice in the area. Both the light transport and an small aircraft C flew around the island in a counter clockwise manner that day. I met the small aircraft C on the opposite side of the island earlier in the day (100 ft vertical 300 horizontal). Near miss. The small aircraft C was monitoring unicom at the time and I informed him of the accepted practice of flying clockwise around the island at that time. In this type of flying all aircraft tend to seek the lowest altitude that is smooth for their sightseeing activities. This puts opposite direction aircraft in direct conflict around the edges of arcadia national park. On this day that altitude was 1400 ft MSL. Every year for the past 5 yrs I have had at least 2 such incidents during the summer and fall season.

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Original NASA ASRS Text

Title: NMAC AT LTT FLIES THROUGH UNCTLED FIELD AIRSPACE WITH NO COM.

Narrative: AN LTT WAS FLYING OPPOSITE DIRECTION. IT HAD CANCELLED ADVISORIES SEVERAL MINS PRIOR. IT THEN FLEW OVER BAR HARBOR ARPT WITHOUT TALKING ON UNICOM. THIS ARPT IS VERY BUSY DURING SUMMER AND FALL MONTHS. AN SMA A ON FINAL TO RWY 4 TRIED TO REACH THE LTT ON UNICOM. IF IT HADN'T BEEN FOR THIS CALL, I WOULD NOT HAVE KNOWN THE LTT WAS IN THE AREA. BASED ON THE CALL FROM THE SMA A TO THIS LTT I STARTED A DSCNT. THE LTT TRANSITED THE AREA AT 1500-2000 AGL WITHOUT EVEN TALKING ON UNICOM. AT THE TIME THEY WERE 3 SMAS, A GLIDER, AND AN LTT B ALL WITHIN 5 MI OF THE ARPT. I WOULD LIKE TO SEE A PUBLISHED RECOMMENDATION FOR FLT AROUND BAR HARBOR/ARCADIA NATL PARK. AT THE TIME I WAS COMPLETING A SCENIC FLT AROUND THE ISLAND WITH 3 PAX. I HAD ON BOTH ROTATING BEACON STROBES AND LNDG LIGHTS. FOR THE PAST 50 YRS PEOPLE HAVE BEEN FLYING AROUND THE ISLAND IN A CLOCKWISE MANNER AND THIS HAS BECOME ACCEPTED PRACTICE IN THE AREA. BOTH THE LTT AND AN SMA C FLEW AROUND THE ISLAND IN A COUNTER CLOCKWISE MANNER THAT DAY. I MET THE SMA C ON THE OPPOSITE SIDE OF THE ISLAND EARLIER IN THE DAY (100 FT VERT 300 HORIZ). NEAR MISS. THE SMA C WAS MONITORING UNICOM AT THE TIME AND I INFORMED HIM OF THE ACCEPTED PRACTICE OF FLYING CLOCKWISE AROUND THE ISLAND AT THAT TIME. IN THIS TYPE OF FLYING ALL ACFT TEND TO SEEK THE LOWEST ALT THAT IS SMOOTH FOR THEIR SIGHTSEEING ACTIVITIES. THIS PUTS OPPOSITE DIRECTION ACFT IN DIRECT CONFLICT AROUND THE EDGES OF ARCADIA NATL PARK. ON THIS DAY THAT ALT WAS 1400 FT MSL. EVERY YEAR FOR THE PAST 5 YRS I HAVE HAD AT LEAST 2 SUCH INCIDENTS DURING THE SUMMER AND FALL SEASON.

Data retrieved from NASA's ASRS site as of July 2007 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.