NTSB Identification: CHI86FA129.
The docket is stored on NTSB microfiche number 33115.
Accident occurred Friday, April 25, 1986 in CHICAGO, IL
Probable Cause Approval Date: 04/25/1988
Aircraft: BELL 222B, registration: N660DD
Injuries: 1 Minor.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE AIRCRAFT HAD JUST DISCHARGED TWO PASSENGERS ON THE ROOFTOP HELIPAD AND WAS PREPARING FOR DEPARTURE. THE AIRCRAFT WAS PICKED UP TO A HOVER AND THE TAILROTOR STRUCK A HELIPORT SURFACE PERIMETER LIGHT. THE TAILROTOR SEPARATED FROM THE AIRCRAFT AND THE AIRCRAFT ROTATED TO THE RIGHT. THROTTLES WERE REDUCED TO STOP THE ROTATION AND THE AIRCRAFT SETTLED BACK DOWN TO THE HELIPAD. THE AIRCRAFT BOUNCED SIDE TO SIDE AND ROLLED OFF THE HELIPAD AND CAME TO REST ON ITS LEFT SIDE. THE PILOT EXITED AND EXTINGUISHED A SMALL FIRE THAT HAD STARTED NEAR THE ENGINE EXHAUST.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:VISUAL LOOKOUT..NOT MAINTAINED..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND
LACK OF FAMILIARITY WITH GEOGRAPHIC AREA..PILOT IN COMMAND
SELF-INDUCED PRESSURE..PILOT IN COMMAND
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