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NTSB Report
October 3, 1984 · Bell 206L-1 · N77AR
Reinholds, PA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 3, 1984
Injury Outcomes
No injuries (2 uninjured)
Location
Reinholds, PA
Aircraft
Bell 206L-1
Tail Number
N77AR
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC85FA001
PLT FELT VIBRATION IN ANTI-TORQUE PEDALS FOLLOWED BY A SERIES OF LOUD BANGS COMING FROM THE TAIL SECTION. PLT INITIATED PRECAUTIONARY LANDING DURING WHICH TAIL ROTOR EFFECTIVENESS. DURING THE 'POWER OFF' RUN ON LANDING MAIN ROTOR BLADES CONTACTED THE TAIL BOOM. POST ACCIDENT EXAMINATION OF THE TAIL ROTOR DRIVESHAFT ASSEMBLY DISCLOSED THE SECOND TAIL ROTOR DRIVE SHAFT SEGMENT FAILED AFTER ONE BOLT FROM THE REAR THOMAS COUPLER DISCONNECTED. EXAMINATION OF THE BOLT HOLES REVEALED THREAD IMPRINTS. THE BOLT AND NUT WERE NOT FOUND
Full Narrative
PLT FELT VIBRATION IN ANTI-TORQUE PEDALS FOLLOWED BY A SERIES OF LOUD BANGS COMING FROM THE TAIL SECTION. PLT INITIATED PRECAUTIONARY LANDING DURING WHICH TAIL ROTOR EFFECTIVENESS. DURING THE 'POWER OFF' RUN ON LANDING MAIN ROTOR BLADES CONTACTED THE TAIL BOOM. POST ACCIDENT EXAMINATION OF THE TAIL ROTOR DRIVESHAFT ASSEMBLY DISCLOSED THE SECOND TAIL ROTOR DRIVE SHAFT SEGMENT FAILED AFTER ONE BOLT FROM THE REAR THOMAS COUPLER DISCONNECTED. EXAMINATION OF THE BOLT HOLES REVEALED THREAD IMPRINTS. THE BOLT AND NUT WERE NOT FOUND
Flight
Event TypeAccident
Event Time09:30 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206L-1
Tail NumberN77AR
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 317
Seats7
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 42 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind250° @ 5 kt
Visibility25 sm
CeilingNone
Temperature / Dew Point55 / 48
Altimeter30.00 inHg
Observation Time13:48
Weather SourceWFAC