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NTSB Report
January 11, 1992 · Bell 206BIII · N95AT
Crockett, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 11, 1992
Injury Outcomes
5 injuries (5 fatalities)
Location
Crockett, CA
Aircraft
Bell 206BIII
Tail Number
N95AT
Operator
Rotor Connection
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX92FA088
THE PILOT HAD BEEN HIRED TO PROVIDE AN AIRLIFT FOR 4 PASSENGERS TO ASSIST THEM IN SURVEYING THE STRAIT FOR AN OIL SPILL.THE PILOT WAS FAMILIAR WITH THE AREA WHICH WAS LOCATED NEAR HIS HOME BASE ARPT. ON A CLEAR DAY, WHILE IN SLOW CRUISE FLT ABOUT 210 FEET AGL, THE PLT COLLIDED NEARLY PERPENDICULAR WITH A POWER LINE. THE LINE WAS DEPICTED ON THE AERONAUTICAL CHART. THE HELICOPTER ENTERED AN UNCONTROLLED DESCENT AND CRASHED INTO THE UNDERLYING STRAIT. AN FAA INSPECTOR WHO FLEW THE SAME ROUTE AS THE ACCIDENT PLT REPORTED THAT THE POWER LINE WAS DIFFICULT TO OBSERVE UNITL HE WAS WITHIN 1000 FT OF IT. THE INSPECTOR INDICATED THAT THE LACK OF CONSPICUITY MAY BE RELATED TO THE FACT THAT THE TOWERS FROM WHICH THE LINE HAD BEEN SUSPENDED ACROSS THE STRAIT WERE LOCATED 4426 FEET APART.
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN VIGILANT WATCH FOR OBSTRUCTIONS WHILE INTENTIONALLY CRUISING SLOWLY AT A LOW ALTITUDE. A FACTOR WAS THE POWER LINE WAS SUPPORTED BY DISTANT TOWERS, AND THE LINE WAS NOT CONSPICUOUS.
Full Narrative
THE PILOT HAD BEEN HIRED TO PROVIDE AN AIRLIFT FOR 4 PASSENGERS TO ASSIST THEM IN SURVEYING THE STRAIT FOR AN OIL SPILL.THE PILOT WAS FAMILIAR WITH THE AREA WHICH WAS LOCATED NEAR HIS HOME BASE ARPT. ON A CLEAR DAY, WHILE IN SLOW CRUISE FLT ABOUT 210 FEET AGL, THE PLT COLLIDED NEARLY PERPENDICULAR WITH A POWER LINE. THE LINE WAS DEPICTED ON THE AERONAUTICAL CHART. THE HELICOPTER ENTERED AN UNCONTROLLED DESCENT AND CRASHED INTO THE UNDERLYING STRAIT. AN FAA INSPECTOR WHO FLEW THE SAME ROUTE AS THE ACCIDENT PLT REPORTED THAT THE POWER LINE WAS DIFFICULT TO OBSERVE UNITL HE WAS WITHIN 1000 FT OF IT. THE INSPECTOR INDICATED THAT THE LACK OF CONSPICUITY MAY BE RELATED TO THE FACT THAT THE TOWERS FROM WHICH THE LINE HAD BEEN SUSPENDED ACROSS THE STRAIT WERE LOCATED 4426 FEET APART.
Flight
Event TypeAccident
Event Time13:26 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206BIII
Tail NumberN95AT
Aircraft CategoryHeli
DamageDestroyed
OperatorRotor Connection
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 317
Seats5
People & Injuries
Injury Summary5 injuries (5 fatalities)
Fatal5
Serious0
Minor0
Uninjured0
Total5
Crew 1Age 46 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind90° @ 4 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point54 / 0 C
Altimeter0
Weather SourceWIT