CHI07CA181

NTSB accident investigation · Bell 206B · Grand Forks, ND · June 26, 2007

Accident · No injuriesData collectionFinal report
Date
June 26, 2007, 14:30 local (19:30 UTC)
Place
Grand Forks, ND
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N96NDBell 206B
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2007
Report
Approved by Office Director
FAA report
20070626020509A
Case key
66138

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The certified flight instructor's inadequate compensation for the gusting wind conditions and failure to maintain control of the helicopter during a hover for takeoff. A factor contributing to the accident was the gusting wind conditions.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterTakeoff
Compensation for wind conditions - inadequatePilot in command(cfi)Cause
Weather condition - gustsFactor
Aircraft control - not maintainedPilot in command(cfi)Cause
Terrain condition - grass
Roll overDescent - uncontrolled
Terrain condition - grass

Analysis

The student pilot hover taxied the helicopter from the ramp to a sod area, where he landed the helicopter. The CFI then took the controls. The CFI reported that when the helicopter lifted off the ground, a gust of wind pitched the nose up and the helicopter drifted rearward. The right side skid caught the ground and the helicopter subsequently rolled on its side, causing damage to both the main and tail rotor blades, the cabin, and the landing gear skids. An examination of the helicopter revealed no pre-impact anomalies. Wind conditions reported near the time of the accident were: Wind 270 degrees at 15 knots, gusting to 22 knots.

Factual narrative

The helicopter was destroyed when it impacted terrain and rolled over during takeoff hover. The certified flight instructor (CFI) reported that the helicopter startup and runup was uneventful. The student pilot hover taxied the helicopter from the ramp to a sod area near Bravo taxiway. The student landed the helicopter and the CFI took over the controls so that the student could put on his view limiting device to prepare for the instrument flight. The CFI stated that when the helicopter lifted off the ground, a gust of wind pitched the nose up and the helicopter drifted rearward. The right side skid caught the ground and the helicopter subsequently rolled on its side, causing damage to both the main and tail rotor blades, the cabin, and the landing gear skids. An examination of the helicopter revealed no pre-impact anomalies.

Wind conditions reported near the time of the accident were: Wind 270 degrees at 15 knots, gusting to 22 knots.

Aircraft

Registration
N96ND
Reported as
Bell 206B
Category
Helicopter
Serial number
4400
Airframe hours
2,250
Engine
Rolls-Royce 250-C20J, 420 horsepower, turbo shaft
Damage
Destroyed
Flight
Instructional · Part 91
Registered owner
University of North Dakota
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 1, 2007
Departed
GFK · Grand Forks, ND
Airport
GFK · Grand Forks Intl

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
60
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, With waivers/limitations
Last flight review
April 1, 2007
Seat
Left
Flight hours
9,000 total · 920 in this make and model · 8,400 as pilot in command · 101 in the last 90 days · 27 in the last 30 days · 2 in the last 24 hours
Role
Student pilot
Age
38
Injuries
None
Certificate
Private
Medical
Class 1, Without waivers/limitations
Seat
Rear
Flight hours
148 total · 41 in this make and model · 71 as pilot in command · 21 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots, gusting 22
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 52 °F
Altimeter
30.04 inHg
Observed at
KGFK

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.