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NTSB Report
June 21, 1990 · Hughes 269A · N110ES
Pittstown, NJ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 21, 1990
Injury Outcomes
1 injury (1 minor injury)
Location
Pittstown, NJ
Aircraft
Hughes 269A
Tail Number
N110ES
Operator
B C Helicopter
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
NYC90LA134
THE PILOT HAD JUST LANDED AFTER A SOLO HELICOPTER TRANSITION FLIGHT. AFTER TOUCHDOWN SHE LOWERED THE COLLECTIVE AND ROLLED OFF THE THROTTLE. THE HELICOPTER ENTERED GROUND RESONANCE AND WAS DESTROYED. POST-CRASH EXAMINATION SHOWED ONE OF THE LANDING GEAR DAMPERS HAD DRIED HYDRAULIC FLUID RESIDUE ON THE BOOT AND PISTON, AND HAD COLLAPSED. TWO OTHER LANDING GEAR DAMPERS WERE ABLE TO BE COMPRESSED BY HAND. ACCORDING TO SCHWEIZER ACFT CO., PROPERLY SERVICED AND MAINTAINED LANDING GEAR DAMPERS WILL NOT COLLAPSE DURING GROUND RESONANCE.
NTSB Probable Cause
GROUND RESONANCE DUE TO INADEQUATE SERVICING AND MAINTENANCE OF THE LANDING GEAR DAMPERS.
Full Narrative
THE PILOT HAD JUST LANDED AFTER A SOLO HELICOPTER TRANSITION FLIGHT. AFTER TOUCHDOWN SHE LOWERED THE COLLECTIVE AND ROLLED OFF THE THROTTLE. THE HELICOPTER ENTERED GROUND RESONANCE AND WAS DESTROYED. POST-CRASH EXAMINATION SHOWED ONE OF THE LANDING GEAR DAMPERS HAD DRIED HYDRAULIC FLUID RESIDUE ON THE BOOT AND PISTON, AND HAD COLLAPSED. TWO OTHER LANDING GEAR DAMPERS WERE ABLE TO BE COMPRESSED BY HAND. ACCORDING TO SCHWEIZER ACFT CO., PROPERLY SERVICED AND MAINTAINED LANDING GEAR DAMPERS WILL NOT COLLAPSE DURING GROUND RESONANCE.
Flight
Event TypeAccident
Event Time14:05 EDT
Nearest AirportSKYMANOR (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 269A
Tail NumberN110ES
Aircraft CategoryHeli
DamageDestroyed
OperatorB C Helicopter
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-B1A · Reciprocating · 180
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 21 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 7 kt
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO