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NTSB Report
December 2, 1992 · Schweizer 269C · N640KC
Kansas City, MO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 2, 1992
Injury Outcomes
2 injuries (2 fatalities)
Location
Kansas City, MO
Aircraft
Schweizer 269C
Tail Number
N640KC
Operator
Board of Police Commissioners
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
CHI93GA046
WHILE ON A ROUTINE NIGHT PATROL THE POLICE HELICOPTER EXPERIENCED THE LOSS OF THE LARGE CLEVIS PIN IN THE CLUTCH CONTROL SPRING ASSEMBLY. THE LOSS OF THE SPRING ASSEMBLY DISCONNECTED THE POWERPLANT FROM THE ROTOR SYSTEM. THE PILOT INITIATED AN AUTOROTATION. THE TERRAIN UNDERLYING THE LANDING ATTEMPT WAS A RAVINE WITH HIGH TREES. THE PILOT WAS NOT ABLE TO JUDGE THE DISTANCE BETWEEN THE HELICOPTER AND THE GROUND TO SUCCESSFULLY EFFECT AN AUTOROTATIONAL LANDING.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S MISJUDGING THE DISTANCE DURING THE AUTOROTATION.
Full Narrative
WHILE ON A ROUTINE NIGHT PATROL THE POLICE HELICOPTER EXPERIENCED THE LOSS OF THE LARGE CLEVIS PIN IN THE CLUTCH CONTROL SPRING ASSEMBLY. THE LOSS OF THE SPRING ASSEMBLY DISCONNECTED THE POWERPLANT FROM THE ROTOR SYSTEM. THE PILOT INITIATED AN AUTOROTATION. THE TERRAIN UNDERLYING THE LANDING ATTEMPT WAS A RAVINE WITH HIGH TREES. THE PILOT WAS NOT ABLE TO JUDGE THE DISTANCE BETWEEN THE HELICOPTER AND THE GROUND TO SUCCESSFULLY EFFECT AN AUTOROTATIONAL LANDING.
Flight
Event TypeAccident
Event Time20:51 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftSchweizer 269C
Tail NumberN640KC
Aircraft CategoryHeli
DamageDestroyed
OperatorBoard of Police Commissioners
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-D1A · Reciprocating · 190
Seats3
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 48 · Second Class
Conditions
ConditionsVMC
LightDark Night
Wind240° @ 12 kt, gusting 20 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point43 C / 21 C
Altimeter29.00 inHg
Observation Time03:05
Weather SourceWFAC