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NTSB Report
September 28, 1990 · Continental Copters MK5A · N9024T
Cranesville, PA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 28, 1990
Injury Outcomes
1 injury (1 minor injury)
Location
Cranesville, PA
Aircraft
Continental Copters MK5A
Tail Number
N9024T
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
NYC90DGM03
THE PILOT STATED THAT HE HAD FINISHED A SPRAY SWATH AND INITIATED A 'CYLIC CLIMB' TO CLEAR TREES AT THE END OF THE FIELD. HE REPORTED HEARING A NOISE 'AS IF SOMETHING BROKE' JUST AFTER THE HELICOPTER CLEARED THE TREES. THE HELICOPTER YAWED RIGHT AND PITCHED DOWN. THE PILOT APPLIED LEFT RUDDER PEDAL AND FULL AFT CYCLIC IN AN ATTEMPT TO RECOVER, BUT THE HELICOPTER IMPACTED THE GROUND AT THE EDGE OF THE WOODED AREA. POST-IMPACT FIRE ENSUED. INVESTIGATORS FOUND NO INDICATION OF PRE-IMPACT POWER LOSS OR LOSS OF TAIL SECTION CONTINUITY. EXAMINATION OF THE FLIGHT CONTROLS TO THE MAIN ROTOR SYSTEM REVEALED THAT A NUT AND BOLT WERE MISSING FROM ONE END OF THE FORE AND AFT CYCLIC CONTROL ROD.
NTSB Probable Cause
THE PILOT'S INABILITY TO MAINTAIN CONTROL OF THE HELICOPTER AFTER THE LOSS OF A PORTION OF THE CYCLIC CONTROL ASSEMBLY; THIS RESULTED IN GROUND IMPACT AND POST-IMPACT FIRE.
Full Narrative
THE PILOT STATED THAT HE HAD FINISHED A SPRAY SWATH AND INITIATED A 'CYLIC CLIMB' TO CLEAR TREES AT THE END OF THE FIELD. HE REPORTED HEARING A NOISE 'AS IF SOMETHING BROKE' JUST AFTER THE HELICOPTER CLEARED THE TREES. THE HELICOPTER YAWED RIGHT AND PITCHED DOWN. THE PILOT APPLIED LEFT RUDDER PEDAL AND FULL AFT CYCLIC IN AN ATTEMPT TO RECOVER, BUT THE HELICOPTER IMPACTED THE GROUND AT THE EDGE OF THE WOODED AREA. POST-IMPACT FIRE ENSUED. INVESTIGATORS FOUND NO INDICATION OF PRE-IMPACT POWER LOSS OR LOSS OF TAIL SECTION CONTINUITY. EXAMINATION OF THE FLIGHT CONTROLS TO THE MAIN ROTOR SYSTEM REVEALED THAT A NUT AND BOLT WERE MISSING FROM ONE END OF THE FORE AND AFT CYCLIC CONTROL ROD.
Flight
Event TypeAccident
Event Time18:00 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftContinental Copters MK5A
Tail NumberN9024T
Aircraft CategoryHeli
DamageDestroyed
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-435-A1F · Reciprocating · 260
Seats1
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 29 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind150° @ 5 kt
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter0
Weather SourcePILO