Probable cause
A loss of control due to the pilot's diverted attention as a result of an open door.
NTSB analysis
According to the pilot, the right door opened during takeoff; he lost control of the helicopter while attempting to secure the door. The helicopter impacted the ramp, the skids separated, and the firewall and tail rotor sustained substantial damage. The pilot reported that there were no mechanical failures or malfunctions prior to the accident. He stated that, prior to departure, he checked the security of the door with elbow pressure but postulated that the securing pin was not fully engaged.
Text from the NTSB. Open the NTSB docket for CEN11CA511 for the full record.
Event
- Date
- Jul 23, 2011
- Type
- Accident
- Place
- Broomfield, Colorado
- Nearest airport
- Rocky Mountain Metropolitan Ai (KBJC)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Robinson Helicopter Company R44 II
- N-number
- N915BW
- Category
- Helicopter
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
Other records under this N-number
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.