Aircraft Accident/Incident Report

Edison, New Jersey 08817
Wednesday, January 15, 1992 15:55 EST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT WAS RETURNING HOME, WHEN ACCORDING TO A WITNESS WHO SAW THE HELICOPTER ABOUT 800 FEET ABOVE THE GROUND, THE ENGINE SOUNDED NORMAL AT FIRST. SHORTLY THEREAFTER, THE ENGINE SPEED INCREASED FOLLOWED BY THE HELICOPTER 'DUTCH ROLLING' (BANKING) LEFT AND RIGHT FOR TWO CYCLES AND THEN ROLLED OVER ONE AND HALF TIMES NOSE FIRST AS IT DROPPED BEHIND THE TREES. THE HELICOPTER COLLIDED WITH POWER LINES BEFORE IMPACTING THE GROUND IN A NOSE DOWN ATTITUDE AND WAS DESTROYED BY POST-CRASH FIRE. EXAMINATION OF AIRCRAFT CONFIRMED CONTINUITY OF THE TRANSMISSION GEAR BOX, AND INTERNAL ROTATIONAL DAMAGE FOR THE ENGINE; HOWEVER, THERE WAS NO SIGNIFICANT ROTATIONAL DAMAGE TO THE MAIN ROTOR, TAIL ROTOR, AND ENGINE TO TRANSMISSION DRIVESHAFT (SHORT SHAFT). EXAMINATION OF THE SHAFT REVEALED IT HAD SEPARAED FROM THE BENDIX COUPLINGS AND WAS CRUSHED ALMOST FLAT. THERE WAS NO EVIDENCE OF ROTATIONAL DAMAGE BETWEEN THE SEPARATED HALVES. METALLURGICAL EXAMINATION REVEALED THE FUEL NOZZLE WAS CORRODED WITH FERROUS FIBERS.

NTSB Probable Cause Narrative

THE BLOCKAGE OF THE FUEL NOZZLE WHICH RESULTED IN PARTIAL LOSS OF ENGINE POWER. CONTRIBUTING WAS THE PILOT'S FAILURE TO MAINTAIN ROTOR RPM.

Event Information

Type of Event Accident
Event Date 1/15/1992
Event Day of the Week Wednesday
Time of Event 1555
Event Time Zone Eastern Standard Time
Event City EDISON
Event State NEW JERSEY
Event Country --
Zipcode of the event site 08817
Event Date Year 1992
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1550 Eastern Standard Time
Direction of event from weather observation facility (degrees) 210
Weather Observation Facility ID EWR
Elevation of weather observation facility 18
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 25
Air Temperature at event time (in degrees celsius) -2
Dew Point at event time (in degress fahrenheit) -16
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 2895
NTSB Notification Source --
NTSB Notification Date Jan 15 1992 12:00AM
NTSB Notification Time 1655
Fiche Number and/or location -used to find docket information 47739
Date of most recent change to record Dec 11 2000 2:41PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8674F
NTSB Number BFO92FA022
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 369D
Aircraft Series Identifier HU-369-D
Aircraft Serial Number 970185D
Certified Max Gross Weight 2100
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 5 1991 12:00AM
Airframe hours since last inspection 1026
Airframe Hours 2100
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SUN DUN INC. OF WASHINGTON
Aircraft Owner Street Address 239 BAYFRONT ROAD
Aircraft Owner City PASADENA
Aircraft Owner State MD
Aircraft Owner Country
Aircraft Owner Zipcode 21122
Operator is an individual? --
Operator Name SUN DUN INC. OF WASHINGTON
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 239 BAYFRONT ROAD
Operator City PASADENA
Operator State MD
Operator Country
Operator Zip code 21122
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City NEW YORK
Departure State NY
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code
Destination City PASADENA
Destination State MD
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 9 2002 11:38AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --