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NTSB Report
March 9, 2008 · Rotorway 162F · N831MS
Cartersville, GA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
March 9, 2008
Injury Outcomes
No injuries (1 uninjured)
Location
Cartersville, GA
Aircraft
Rotorway 162F
Tail Number
N831MS
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC08CA132
The owner/builder of the Rotorway 162F was performing pedal turns while conducting initial flight tests. During a turn the left pedal "popped" and "fell away." He immediately dropped the collective and landed hard, causing significant damage to the tail boom. He inspected the helicopter and discovered the foot pedal scissor beam had pulled away from its retaining bolt. The scissor beam was designed to be sandwiched between two nylon pivot bushings, and retained by an aluminum bushing and bolt. During the construction phase he inadvertently mounted the aluminum bushing on the inside of the scissor beam, allowing the beam to be pulled past the mounting bolt when pressure was applied.
NTSB Probable Cause
The owner/builder's improper installation of the foot pedal scissor beam, which resulted in its failure during hover flight.
Full Narrative
The owner/builder of the Rotorway 162F was performing pedal turns while conducting initial flight tests. During a turn the left pedal "popped" and "fell away." He immediately dropped the collective and landed hard, causing significant damage to the tail boom. He inspected the helicopter and discovered the foot pedal scissor beam had pulled away from its retaining bolt. The scissor beam was designed to be sandwiched between two nylon pivot bushings, and retained by an aluminum bushing and bolt. During the construction phase he inadvertently mounted the aluminum bushing on the inside of the scissor beam, allowing the beam to be pulled past the mounting bolt when pressure was applied.
Flight
Event TypeAccident
Event Time17:00 EDT
Nearest AirportCartersville (0nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRotorway 162F
Tail NumberN831MS
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotorway · RI162F · Reciprocating · 150
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 53 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind200° @ 4 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point52 / 25 C
Altimeter30.36 inHg
Observation Time20:53
Weather SourceWFAC