NTSB Identification: CHI92LA017.
The docket is stored on NTSB microfiche number 45572.
Accident occurred Wednesday, October 23, 1991 in BEECH GROVE, IN
Probable Cause Approval Date: 12/04/1992
Aircraft: MCDONNELL DOUGLAS MD369D, registration: N88SE
Injuries: 3 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 ACCIDENT HELICOPTER EXPERIENCED A LOSS OF CYCLIC PITCH CONTROL DURING LIFTOFF TO A HOVER AT THE START OF A BUSINESS FLIGHT. THE HELICOPTER PITCHED UP, STRIKING THE TAIL ROTOR INTO THE GROUND AND THEN ROLLED ONTO ITS RIGHT SIDE. THE HELICOPTER SUSTAINED SUBSTANTIAL DAMAGE. THE COMMERCIAL PILOT AND TWO PASSENGERS WERE NOT INJURED. ON SCENE INSPECTION OF THE WRECKAGE SHOWED A FLIGHT CONTROL LINKAGE DISCONNECT. THE MISSING BOLT WAS FOUND ON THE GROUND NEXT TO THE HELICOPTER. THE OTHER CONNECTING HARDWARE WAS NOT FOUND. THE PILOT STATED THAT HE DID NOT NOTICE THE MISSING NUT DURING HIS PREFLIGHT INSPECTION.

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

IMPROPER INSTALLATION OF THE FLIGHT CONTROL LINKAGE DURING MAINTENANCE. COMPLACENCY AND INADEQUATE INSPECTION OF THE HELICOPTER BY MAINTENANCE PERSONNEL AND THE PILOT ARE FACTORS IN THE ACCIDENT.

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