Narrative:

I flew the hudson river VFR corridor in moderate turbulence and windshear in two ship formation for an aerial photo shoot. Altitude was to be between 1;200 and 1;300 ft. All mandatory reporting radio calls were made. As we gained on a helicopter going our same direction but higher; we passed abeam of it; but then the helicopter turned into us. I maneuvered left since the helicopter began to descend in its turn a slight climb was initiated by me. ATC informed there was a possible pilot deviation in going above 1;300 ft.

Google
 

Original NASA ASRS Text

Title: Two fixed wing aircraft in formation on a photo mission in the New York City SFRA had a near miss with a sightseeing helicopter at about 1;400 FT over the Hudson River.

Narrative: I flew the Hudson River VFR corridor in moderate turbulence and windshear in two ship formation for an aerial photo shoot. Altitude was to be between 1;200 and 1;300 FT. All mandatory reporting radio calls were made. As we gained on a helicopter going our same direction but higher; we passed abeam of it; but then the helicopter turned into us. I maneuvered left since the helicopter began to descend in its turn a slight climb was initiated by me. ATC informed there was a possible pilot deviation in going above 1;300 FT.

Data retrieved from NASA's ASRS site as of July 2013 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.