Narrative:

I was making an approach to runway 16L at manassas municipal airport (west 10) at about XA00 Z on a VFR evening, but the conditions were hazy. A small high wing aircraft (small aircraft) cut in front of my pattern when I was on downwind. A small business jet had announced behind me on unicom. When the small slow high wing aircraft cut me off I extended my pattern downwind and left the pattern. I then made a straight in approach to runway 16R. The pattern was clear. I announced my intentions on the unicom. The runway was 3 mi and appeared clear. There was no response to my unicom communication. As I was about to touch down I saw a helicopter maneuvering near an intersection 2/3 down the 5600' runway. He appeared to be moving from side to side and occasionally appeared to infringe on the runway. I asked him several times via unicom to keep clear. He did not answer. As I approached the half way point of runway on my ground roll, he turned into runway but did not communicate. I applied my brakes vigorously, as I came near stopping both tires blew. I immediately came to a stop. Thee was no damage to my airplane. The plane stopped 200 yds short of the intersection. I feel the helicopter was amiss in not communication via unicom.

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Original NASA ASRS Text

Title: NON TWR ARPT. HELICOPTER MANEUVERING SO THAT HE INFRINGED ON RWY AREA. REPORTER APPLIED BRAKES TO AVOID. BLEW TIRES.

Narrative: I WAS MAKING AN APCH TO RWY 16L AT MANASSAS MUNI ARPT (W 10) AT ABOUT XA00 Z ON A VFR EVENING, BUT THE CONDITIONS WERE HAZY. A SMALL HIGH WING ACFT (SMA) CUT IN FRONT OF MY PATTERN WHEN I WAS ON DOWNWIND. A SMALL BUSINESS JET HAD ANNOUNCED BEHIND ME ON UNICOM. WHEN THE SMALL SLOW HIGH WING ACFT CUT ME OFF I EXTENDED MY PATTERN DOWNWIND AND LEFT THE PATTERN. I THEN MADE A STRAIGHT IN APCH TO RWY 16R. THE PATTERN WAS CLEAR. I ANNOUNCED MY INTENTIONS ON THE UNICOM. THE RWY WAS 3 MI AND APPEARED CLEAR. THERE WAS NO RESPONSE TO MY UNICOM COM. AS I WAS ABOUT TO TOUCH DOWN I SAW A HELI MANEUVERING NEAR AN INTXN 2/3 DOWN THE 5600' RWY. HE APPEARED TO BE MOVING FROM SIDE TO SIDE AND OCCASIONALLY APPEARED TO INFRINGE ON THE RWY. I ASKED HIM SEVERAL TIMES VIA UNICOM TO KEEP CLEAR. HE DID NOT ANSWER. AS I APCHED THE HALF WAY POINT OF RWY ON MY GND ROLL, HE TURNED INTO RWY BUT DID NOT COMMUNICATE. I APPLIED MY BRAKES VIGOROUSLY, AS I CAME NEAR STOPPING BOTH TIRES BLEW. I IMMEDIATELY CAME TO A STOP. THEE WAS NO DAMAGE TO MY AIRPLANE. THE PLANE STOPPED 200 YDS SHORT OF THE INTXN. I FEEL THE HELI WAS AMISS IN NOT COM VIA UNICOM.

Data retrieved from NASA's ASRS site as of August 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.