A light aircraft reported an near midair collision with a helicopter at ldj.

Attributes
ACN	819039
Time
Date	200901
Local Time Of Day	1201-1800
Place
Locale Reference	LDJ.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Flight Plan	None
Aircraft 2
Make Model Name	Helicopter
Flight Phase	Taxi
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Commercial
Experience	Flight Crew Last 90 Days 20 Flight Crew Total 1880 Flight Crew Type 200
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 300 Vertical 300

Narrative:

While on taxiway at departure end to runway 27; I announced on the CTAF that I was departing runway 27 and staying in the pattern. At 200 ft MSL; I saw a helicopter cross the extended centerline of runway 27. The crossing helicopter intersected the runway extension at about a 45 degree angle left to right. I made a left crosswind turn at 200 ft MSL instead of a usual 400 ft MSL. I continued a usual approach; making a single call to the helicopter plot. There was no response.

Original NASA ASRS Text

Title: A light aircraft reported an NMAC with a helicopter at LDJ.

Narrative: While on taxiway at departure end to Runway 27; I announced on the CTAF that I was departing Runway 27 and staying in the pattern. At 200 FT MSL; I saw a helicopter cross the extended centerline of Runway 27. The crossing helicopter intersected the runway extension at about a 45 degree angle left to right. I made a left crosswind turn at 200 FT MSL instead of a usual 400 FT MSL. I continued a usual approach; making a single call to the helicopter plot. There was no response.

Data retrieved from NASA's ASRS site as of April 2012 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.