Aircraft Accident/Incident Report

Twin Peaks, California 92391
Saturday, July 11, 1992 8:07 PDT

NTSB Narrative Summary Released at Completion of Accident

BEFORE DEPARTING ON THE ACCIDENT FLIGHT THE PILOT CALLED HIS FRIEND AND CANCELLED A PREVIOUSLY SCHEDULED FLIGHT FOR HIS FRIEND'S SON STATING THAT IT WAS TOO FOGGY. ABOUT 30 MINUTES LATER THE PILOT DEPARTED THE MOUNTAINOUS AREA HELIPAD ON THE ACCIDENT FLIGHT. THERE WERE NO EYEWITNESS. THE CARETAKER OF THE HELIPAD AREA REPORTED THAT THE HELICOPTER FLEW IN A NORTHERLY DIRECTION AND THAT THE PREVAILING FOG/LOW CLOUDS CONDITIONS WERE INTERMITTENT AT THE TIME OF DEPARTURE. ABOUT 5 MINUTES LATER GROUND WITNESSES HEARD THE HELICOPTER PASS OVER THE CONDOMINIUM COMPLEX IN A SOUTHEASTERLY DIRECTION AND MOMENTS LATER THEY REPORTED HEARING A SUDDEN LOUD NOISE. THE WITNESSES REPORTED THAT THE CEILING WAS ABOUT 50 FEET ABOVE THE GROUND AND THAT THE HIGHER ELEVATION TREE TOPS WERE OBSCURED BY THE CLOUDS. THE HELICOPTER STRUCK THE TREES SOUTH OF THE CONDOMINIUM COMPLEX AND CONTINUED IN A SOUTHEASTERLY DIRECTION UNTIL STRIKING THE SOUTHSIDE OF THE COMPLEX. A 6-FT BY 2-FT DIAMETER SECTION OF THE TREE WAS SEVERED BY THE HELICOPTER'S MAIN ROTOR BLADE AND PENETRATED THE CONDOMINIUM COMPLEX ROOF AND FRONT GLASS WINDOW. THE TREE SECTION CAME TO REST ABOUT 250 FEET BEYOND THE TREE IMPACT AREA IN THE STREET.

NTSB Probable Cause Narrative

WAS THE PILOT'S DECISION TO INITIATE THE FLIGHT IN KNOWN ADVERSE WEATHER AND CONTINUED VFR FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS. CONTRIBUTING TO THIS ACCIDENT WAS THE LOW CLOUDS AND FOG.

Event Information

Type of Event Accident
Event Date 7/11/1992
Event Day of the Week Saturday
Time of Event 807
Event Time Zone Pacific Daylight Time
Event City TWIN PEAKS
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92391
Event Date Year 1992
Event Date Month 7
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 Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 50
Lowest Non-Ceiling Height 50
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 0
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
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) 2515
NTSB Notification Source --
NTSB Notification Date Jul 11 1992 12:00AM
NTSB Notification Time 830
Fiche Number and/or location -used to find docket information 47347
Date of most recent change to record Dec 11 2000 3:05PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N59484
NTSB Number LAX92FA294
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 None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 206B
Aircraft Series Identifier 206B
Aircraft Serial Number 1264
Certified Max Gross Weight 3200
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Apr 29 1992 12:00AM
Airframe hours since last inspection 59
Airframe Hours 3981
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name HISER HELICOPTERS, INC
Aircraft Owner Street Address 1969 AVIATION DRIVE, UNIT C
Aircraft Owner City CORONA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 91720
Operator is an individual? --
Operator Name FARRELL, RICHARD L.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 27905 PENINSULA DR. NORTH
Operator City LAKE ARROWHEAD
Operator State CA
Operator Country
Operator Zip code 92352
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City RIM FOREST
Departure State CA
Departure Country
Departure Time 801
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code UDD
Destination City BERMUDA DUNES
Destination State CA
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --