NTSB Identification: DEN87LA204.
The docket is stored on NTSB microfiche number 34720.
Accident occurred Thursday, July 30, 1987 in CANON CITY, CO
Probable Cause Approval Date: 10/07/1988
Aircraft: BELL 47J-2, registration: N73265
Injuries: 5 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ATP PLT WAS FLYING SIGHTSEEING RIDES. THERE WERE TWO ADULTS AND TWO CHILDREN IN THE FOUR PASSENGER HELICOPTER. DENSITY ALTITUDE WAS 10000 FEET. THE ACFT LOST PWR AND THE PLT ABORTED TAKEOFF AND LANDED. AFTER AN ENG RUNUP THE PLT TOOK OFF AGAIN AND THE HELICOPTER WAS BROUGHT TO A HOVER TO RETURN TO THE LOADING AREA. WHILE TURNING, THE TAIL ROTOR STRUCK A FENCE AND WAS SEVERED. THE HELICOPTER MADE AN UNCOMMANDED RIGHT TURN AND THE PLT EXECUTED A HOVERING AUTOROTATION. A POST ACCIDENT INSPECTION REVEALED EVIDENCE THAT A PLUG WAS MISSING FROM THE INTAKE MANIFOLD.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

CLIMB..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

CLEARANCE..NOT MAINTAINED..PILOT IN COMMAND



Contributing Factors

OBJECT..FENCE



Contributing Factors

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..CONTINUED..PILOT IN COMMAND

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