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Aviation safety reports, made easier to study

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June 1, 2008 · Bell 47D1 · N74898

Carrollton, OH

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 1, 2008
Injury Outcomes
No injuries (2 uninjured)
Location
Carrollton, OH
Aircraft
Bell 47D1
Tail Number
N74898
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI08LA151

The pilot reported that he had departed the airport and had flown about 8 miles when the helicopter's cyclic began to shake violently during cruise flight. When he attempted to land, he could not get the helicopter to hover so he attempted a run-on landing. The pilot reported that the helicopter's skid caught some high grass or rough terrain and then the helicopter rolled on its side. The pilot reported that the helicopter was operating normally prior to the accident. The inspection of the helicopter revealed no preexisting anomalies.

NTSB Probable Cause

Environmental issues-Physical environment-Terrain-Rough terrain-Contributed to outcome

Full Narrative

On June 1, 2008, at 1330 eastern daylight time, a Bell 47D1 helicopter, N74898, sustained substantial damage during a forced landing to a field after it experienced a severe shaking in the cyclic control during cruise flight near Carrollton, Ohio. The commercial helicopter pilot was not injured. The 14 Code of Federal Regulations Part 91 personal flight departed the Carrollton County-Tolson Airport (TSO), Carrollton, Ohio, at 1315 en route to Wheeling, West Virginia. Visual meteorological conditions prevailed and no flight plan was filed. The pilot reported he had departed TSO and had flown about 8 miles when the helicopter's cyclic began to shake violently. When he attempted to land, he could not get the helicopter to hover so he attempted a run-on landing. The pilot reported that the helicopter's skid caught some high grass or rough terrain and the helicopter rolled on its side. The pilot reported that the helicopter was operating normally prior to the accident. The inspection of the helicopter by a helicopter mechanic revealed no preexisting anomalies. A broken hydraulic hose was sent to the National Transportation Safety Board's Investigator-In-Charge (IIC) for inspection. The inspection of the hose revealed no pre-impact anomaly.

Flight

Event TypeAccident
Event Time13:30 EDT
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBell 47D1
Tail NumberN74898
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · O-325-5D · Reciprocating
Seats3

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 55 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind330° @ 13 kt, gusting 18 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point54
Altimeter29.90 inHg
Observation Time16:53
Weather SourceWFAC

Appendix: Source Data