NTSB Identification: NYC86FA232.
The docket is stored on NTSB microfiche number 32577.
Accident occurred Tuesday, September 09, 1986 in WHITE PLAINS, NY
Aircraft: SIKORSKY SK-76, registration: N93AE
Injuries: 4 Uninjured.

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.

APRX 12 SECONDS AFTER TAKEOFF WHILE CLIMBING THROUGH 400 FT THE ACFT EXPERIENCED A TAIL ROTOR PADDLE SEPARATION. THE YELLOW PADDLE BLADE FAILED FIRST FOLLOWED BY THE RED. THE PLT REPORTED HEARING A LOUD BANG FOLLOWED BY A SEVERE VIBRATION. A PRECAUTIONARY LANDING WAS MADE WITHOUT INCIDENT. INSPECTION REVEALED THAT THE COMPLETE PADDLE SPAR HAD FAILED AND SEPARATED. THERE WAS NO EVIDENCE OF A BIRD STRIKE OR FOD DAMAGE. THIS WAS THE FIRST FLT AFTER THE TAIL ROTOR BLADE ASSEMBLY WAS INSTALLED.

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

ROTOR SYSTEM,TAIL ROTOR BLADE SPAR..FAILURE,TOTAL

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

TAIL ROTOR/ANTI-TORQUE CONTROL..POOR..MANUFACTURER

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

MATERIAL DEFECT..MANUFACTURER

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

INSUFFICIENT STANDARDS/REQUIREMENTS,MANUFACTURER..MANUFACTURER

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