Narrative:

When in a turn near the san jacinto monument at approximately 700' MSL the left door of the helicopter came open, and the seat belt was banging the side of the helicopter, putting dents in it. It was necessary that I find a place to hover the helicopter to shut the door. I did so and two silly security agents waived me off. I complied after I shut the door. I did not land but came to a hover, shut the door, then pickup and left. There was no damage, and no one was injured and there was no threat or danger to property or life. There was no people in the area I came to a hover to close the door. Nothing else happened.

Google
 

Original NASA ASRS Text

Title: HELI PLT EXPERIENCES DOOR IPENING WHILE TURNING AT 700' MSL OVER SAN JACINTO NATIONAL MONUMENT. PLT BRINGS ACFT TO HOVER NEAR GND IN ORDER TO PULL SEAT BELT IN AND CLOSE DOOR. SECURITY AGENTS ON GND OBJECT TO REPORTER'S FLYING LOW OVER NATIONAL MONUMENT.

Narrative: WHEN IN A TURN NEAR THE SAN JACINTO MONUMENT AT APPROX 700' MSL THE LEFT DOOR OF THE HELI CAME OPEN, AND THE SEAT BELT WAS BANGING THE SIDE OF THE HELI, PUTTING DENTS IN IT. IT WAS NECESSARY THAT I FIND A PLACE TO HOVER THE HELI TO SHUT THE DOOR. I DID SO AND TWO SILLY SECURITY AGENTS WAIVED ME OFF. I COMPLIED AFTER I SHUT THE DOOR. I DID NOT LAND BUT CAME TO A HOVER, SHUT THE DOOR, THEN PICKUP AND LEFT. THERE WAS NO DAMAGE, AND NO ONE WAS INJURED AND THERE WAS NO THREAT OR DANGER TO PROPERTY OR LIFE. THERE WAS NO PEOPLE IN THE AREA I CAME TO A HOVER TO CLOSE THE DOOR. NOTHING ELSE HAPPENED.

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.