NTSB Identification: NYC88LA083.
The docket is stored on NTSB microfiche number 37483.
Accident occurred Tuesday, February 16, 1988 in WATERFALL, PA
Probable Cause Approval Date: 09/11/1989
Aircraft: HUGHES 369D, registration: N5093Y
Injuries: 3 Serious.

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

SHORTLY AFTER TAKEOFF, THE PILOT HEARD A LOUD 'BOOM' AND EXPERIENCED A LOSS OF TAIL ROTOR CONTROL ACCOMPANIED BY AN INCREASE IN N2 AND RPM. A RADIO TRANSMISSION WAS MADE TO THE AIRCRAFT THAT WAS TRAILING AND THEN AN APPROACH FOR LANDING SET UP. ON LANDING, THE HELICOPTER TOUCHED DOWN HARD BUT LEVEL AND WITH THE SKIDS IN LINE WITH THE FINAL APPROACH PATH. THE HELICOPTER BOUNCED SEVERAL TIMES BEFORE COMING TO REST ON ITS RIGHT SIDE, 45 FEET FROM THE SECOND TOUCHDOWN POINT. INVESTIGATION REVEALED THAT THE TAIL ROTOR HAD SEPARATED FROM THE ACFT IN FLT. THE TAIL ROTOR WAS 3/4 MILE FROM THE ACC SITE. 300 YARDS FARTHER AWAY WAS A FLT BAG FROM THE HELICOPTER WITH TAIL ROTOR PAINT ON IT. THERE WERE NO DOORS ON THE HELICOPTER BECAUSE OF ITS USE IN POWER LINE PATROL.

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

TIE DOWN..INADEQUATE..PILOT IN COMMAND

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

MISC EQPT/FURNISHINGS..DEPLOYED INADVERTENTLY

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

ROTOR SYSTEM,TAIL ROTOR BLADE..DISABLED


Contributing Factors

ROTORCRAFT FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND


Contributing Factors

DOOR,EXTERIOR CREW..LACK OF




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