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NTSB Report
February 19, 1993 · Bell 214B1 · N114CR
Ketchikan, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 19, 1993
Injury Outcomes
2 injuries (2 fatalities)
Location
Ketchikan, AK
Aircraft
Bell 214B1
Tail Number
N114CR
Operator
Chester Rasberry
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
ANC93FA033
THE HELICOPTER WAS HOVERING 200 FT AGL, WITH LOGS ATTACHED TO A 150-FT LONGLINE, WHEN IT WAS OBSERVED TO HAVE A LOSS OF CONTROL. THE LOGS WERE DRAGGED ALONG THE GROUND UNTIL CAUGHT IN STUMPS, PITCHING THE HELICOPTER INTO THE GROUND. THE LOWER PISTON ROD OF THE RIGHT DUAL HYDRAULIC SERVO ACTUATOR HAD FAILED IN FATIGUE; ALSO BEARING WEAR WAS INCONSISTENT WITH COMPONENTS OF COMPARABLE TIME. OPERATOR RECORDS SHOWED REGULAR OVERLOADING OF AEROLOGGING HELICOPTERS; ACFT OVERLOADED BY 2000 LBS PRIOR TO ACCIDENT. OPERATOR MAINTENANCE & FACILITY RECORDS INCOMPLETE. MAINTENANCE PERFORMED IN ALASKA WITHOUT FAA AUTHORIZATION. NO RECORDS OF OF FAA SURVEILLANCE OF OPERATOR EXTERNAL LOAD OPERATIONS IN ALASKA SINCE START OF OPERATIONS 4/91. THE EXTERNAL HOOK ELECTRICAL RELEASE MECHANISM WAS TESTED & FUNCTIONED NORMALLY.
NTSB Probable Cause
INADEQUATE MAINTENANCE OF THE HYDRAULIC SERVO ACTUATOR WHICH LED TO THE FATIGUE FAILURE AND LOSS OF FLIGHT CONTROL. IN ADDITION, THE FLIGHTCREW DID NOT, OR WAS UNABLE TO, JETTISON THE EXTERNAL LOAD. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE PILOT OPERATING THE HELICOPTER OVER MAXIMUM GROSS WEIGHT, THE OPERATOR'S CONTINUED AEROLOGGING OPERATIONS WITH AIRCRAFT EXCEEDING MAXIMUM GROSS WEIGHT, AND INADEQUATE SURVEILLANCE OF THE OPERATOR'S MAINTENANCE AND OPERATIONS ACTIVITY BY THE FEDERAL AVIATION ADMINISTRATION.
Full Narrative
THE HELICOPTER WAS HOVERING 200 FT AGL, WITH LOGS ATTACHED TO A 150-FT LONGLINE, WHEN IT WAS OBSERVED TO HAVE A LOSS OF CONTROL. THE LOGS WERE DRAGGED ALONG THE GROUND UNTIL CAUGHT IN STUMPS, PITCHING THE HELICOPTER INTO THE GROUND. THE LOWER PISTON ROD OF THE RIGHT DUAL HYDRAULIC SERVO ACTUATOR HAD FAILED IN FATIGUE; ALSO BEARING WEAR WAS INCONSISTENT WITH COMPONENTS OF COMPARABLE TIME. OPERATOR RECORDS SHOWED REGULAR OVERLOADING OF AEROLOGGING HELICOPTERS; ACFT OVERLOADED BY 2000 LBS PRIOR TO ACCIDENT. OPERATOR MAINTENANCE & FACILITY RECORDS INCOMPLETE. MAINTENANCE PERFORMED IN ALASKA WITHOUT FAA AUTHORIZATION. NO RECORDS OF OF FAA SURVEILLANCE OF OPERATOR EXTERNAL LOAD OPERATIONS IN ALASKA SINCE START OF OPERATIONS 4/91. THE EXTERNAL HOOK ELECTRICAL RELEASE MECHANISM WAS TESTED & FUNCTIONED NORMALLY.
Flight
Event TypeAccident
Event Time08:40 AKST
Nearest Airport0nm N
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 214B1
Tail NumberN114CR
Aircraft CategoryHeli
DamageDestroyed
OperatorChester Rasberry
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsLycoming · T5508D · Turboshaft · 2050
Seats7
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 49 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind160° @ 8 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point39 C / 0 C
Altimeter29.00 inHg
Weather SourceWIT