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NTSB Report
May 25, 2009 · Robinson Helicopter R44 II · N47GT
Meredith, NH
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
May 25, 2009
Injury Outcomes
No injuries (4 uninjured)
Location
Meredith, NH
Aircraft
Robinson Helicopter R44 II
Tail Number
N47GT
Operator
Glenn L Tonnesen
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA09CA337
The pilot stated that with three passengers, he departed from a dock on his property to conduct a local flight. After 1 hour, he returned to the same dock for landing. The approach was normal, but when the pilot came to a 2- to 3-foot hover above the dock the helicopter “dropped violently onto its skids.” The helicopter then began sliding backward with the tail down towards the water. He applied power in an attempt to bring the helicopter to a hover, but it rolled onto its left side and slid rearward into the water. The rotor, airframe, transmission, engine, and avionics incurred damage. The pilot stated that there were no mechanical abnormalities present with the helicopter prior to the flight, or the accident sequence.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained - C
Full Narrative
The pilot stated that with three passengers, he departed from a dock on his property to conduct a local flight. After 1 hour, he returned to the same dock for landing. The approach was normal, but when the pilot came to a 2- to 3-foot hover above the dock the helicopter “dropped violently onto its skids.” The helicopter then began sliding backward with the tail down towards the water. He applied power in an attempt to bring the helicopter to a hover, but then it rolled onto its left side and slid rearward into the water. The rotor, airframe, transmission, engine, and avionics incurred damage. The pilot stated that there were no mechanical abnormalities present with the helicopter prior to the flight, and did not report after the accident experiencing any prior to the initiation of the accident sequence.
Flight
Event TypeAccident
Event Time11:47 EDT
Nearest AirportLaconia Municipal Airport (6nm)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson Helicopter R44 II
Tail NumberN47GT
Aircraft CategoryHeli
DamageSubstantial
OperatorGlenn L Tonnesen
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-540-F1B5 · Reciprocating · 205
Seats4
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 61 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 13 kt, gusting 26 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 30 C
Altimeter29.97 inHg
Observation Time15:35
Weather SourceWFAC