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NTSB Report
September 21, 1989 · Hughes 269B · N9318F
Lexington, MS
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 21, 1989
Injury Outcomes
1 injury (1 minor injury)
Location
Lexington, MS
Aircraft
Hughes 269B
Tail Number
N9318F
Operator
Provine Bob Jr
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MIA89LA255
DURING FLT, THE HELICOPTER PLT NOTED THAT THE MAIN ROTOR RPM BEGAN DECREASING & THE ENG RPM BEGAN INCREASING. HE INITIATED AN AUTOROTATION, BUT THE HELICOPTER LANDED IN TREES & WAS DAMAGED. AN EXAM REVEALED A BOLT LUG ON THE END OF THE LINEAR ACTUATOR (THAT ENGAGED THE BELT DRIVE) HAD FAILED FROM FATIGUE.
NTSB Probable Cause
FATIGUE FAILURE OF THE LINEAR ACTUATOR LUG. A RELATED FACTOR WAS: TREES IN THE EMERGENCY LANDING AREA.
Full Narrative
DURING FLT, THE HELICOPTER PLT NOTED THAT THE MAIN ROTOR RPM BEGAN DECREASING & THE ENG RPM BEGAN INCREASING. HE INITIATED AN AUTOROTATION, BUT THE HELICOPTER LANDED IN TREES & WAS DAMAGED. AN EXAM REVEALED A BOLT LUG ON THE END OF THE LINEAR ACTUATOR (THAT ENGAGED THE BELT DRIVE) HAD FAILED FROM FATIGUE.
Flight
Event TypeAccident
Event Time18:00 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 269B
Tail NumberN9318F
Aircraft CategoryHeli
DamageSubstantial
OperatorProvine Bob Jr
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-A1A · Reciprocating · 180
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Second Class
Conditions
ConditionsVMC
LightDaylight
Wind360° @ 5 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point63 F
Altimeter29.00 inHg
Observation Time22:53
Weather SourceWFAC