Zelienople Muni Airport
Aircraft Accident/Incident Report

Zelienople, Pennsylvania 16063
Saturday, March 8, 2003 11:30 EST

NTSB Narrative Summary Released at Completion of Accident

While hovering over a taxiway, the tail rotor assembly separated and the helicopter began to spin. The helicopter struck the ground and rolled over. Examination of the helicopter revealed that the separated tail rotor assembly and gearbox had the mounting portion of the top bulkhead ring still attached by the associated attachment bolts. Examination of the helicopter tail boom pylon revealed the top bulkhead ring attachment flange remained riveted in place. Chaffing damage was observed on the left and right side fracture surfaces, consistent with preexisting cracks. In addition, areas of corrosion were observed on the inner surface of the top bulkhead ring. The pilot did not posses a pilot or medical certificate. He reported 60 hours of total flight experience, all accumulated in the accident helicopter. The pilot stated he maintained the helicopter. He did not posses an FAA airframe or power plant certificate. According to maintenance records, the helicopter's most recent annual inspection was performed about 16 months prior to the accident.

NTSB Probable Cause Narrative

The failure of the tail rotor assembly due to improper maintenance by the owner/pilot.

Event Information

Type of Event Accident
Event Date 3/8/2003
Event Day of the Week Saturday
Time of Event 1130
Event Time Zone Eastern Standard Time
Event City Zelienople
Event State PENNSYLVANIA
Event Country --
Zipcode of the event site 16063
Event Date Year 2003
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 404805N
Event Location Longitude 0800938W
Event Location Airport ZELIENOPLE MUNI
Event Location Nearest Airport ID 8G7
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 901
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1135 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 100
Weather Observation Facility ID BTP
Elevation of weather observation facility 1248
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 6
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.01
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 14989
NTSB Notification Source EROC
NTSB Notification Date Mar 8 2003 12:00AM
NTSB Notification Time 1245
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 2 2004 8:06AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Allegheny County

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2238U
NTSB Number NYC03LA063
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Brantly Helicopter
Aircraft Model B-2B
Aircraft Series Identifier --
Aircraft Serial Number 479
Certified Max Gross Weight 1670
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 2 2001 12:00AM
Airframe hours since last inspection 55
Airframe Hours 554
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Benjamin Panella Jr.
Aircraft Owner Street Address --
Aircraft Owner City Wampum
Aircraft Owner State PA
Aircraft Owner Country USA
Aircraft Owner Zipcode 16157
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City New Galilee
Departure State PA
Departure Country USA
Departure Time 1100
Departure Time Zone EST
Destination Same as Local Flt crash at destination city
Destination Airport Code 8G7
Destination City Zelienople
Destination State PA
Destination Country USA
Specific Phase of Flight Hover
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Dec 16 2003 2:34PM
User who most recently changed record PEAR
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --