NTSB Identification: ATL88LA190.
The docket is stored on NTSB microfiche number 37134.
Accident occurred Monday, June 06, 1988 in COALING, AL
Probable Cause Approval Date: 10/03/1989
Aircraft: SIKORSKY S-55C, registration: N883
Injuries: 1 Minor.

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 HELO WAS APPROACHING A HELIPAD FOR LANDING AFTER THE LAST AERIAL APPLICATION FLIGHT OF THE DAY WHEN THERE WAS A POP AND TAIL ROTOR CONTROL WAS LOST. AFTER SEVERAL ROTATIONS ABOUT THE VERTICAL AXIS, THE PIC LANDED THE HELO HARD, COLLAPSING THE LANDING GEAR. THE PIC/OWNER SAID THE TAIL ROTOR PITCH CHANGE LINK BOLT AND NUT WERE ABSENT. THERE WAS NO OTHER DAMAGE TO THE TAIL ROTOR. THE PIC/OWNER SAID HE HAD CHANGED THE TAIL ROTOR HUB AND THE PITCH CHANGE LINKS DURING THE WINTER, ABOUT 50 FLIGHT HOURS PRIOR TO THE ACCIDENT.

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

ROTORCRAFT FLIGHT CONTROL,TAIL ROTOR CONTROL..LOSS,TOTAL

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

ROTOR SYSTEM,TAIL ROTOR HUB PITCH LINK..LOOSE

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

MAINTENANCE,MAJOR REPAIR..IMPROPER..COMPANY/OPERATOR MANAGEMENT

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