CHI07CA226

NTSB accident investigation · Hamilton Rotorway Exec 90 · Harvey, ND · July 22, 2007

Accident · No injuriesData collectionFinal report
Date
July 22, 2007, 15:00 local (20:00 UTC)
Place
Harvey, ND
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
C-FWBNHamilton Rotorway Exec 90
Weather
Visual (VMC) · Day
Status
Completed · report October 31, 2007
Report
Approved by Office Director
Parties
FAA-Fargo FSDO
Case key
66607

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 pilot's failure to maintain clearance from the airport ramp area during the return for landing, which resulted in the landing skid dragging on the edge of the pavement and causing the helicopter to roll over.

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.

Dragged wing,rotor,pod,float or tail/skidTakeoff
Clearance - not maintainedPilot in commandCause

Analysis

The amateur-built helicopter was substantially damaged when it caught a skid and rolled over during landing. The pilot stated that he originally landed at the accident airport as an intermediate fuel stop. After fueling, the pilot and passenger planned to continue the trip. The pilot stated that on takeoff, the helicopter had not obtained translational lift before he flew from the paved ramp area toward an agricultural field and "lost [the] cushion of air." He made a "sharp" 180-degree turn in an attempt to return to the ramp area; however, the "passenger side skid hooked [the] edge of [the] tarmac" and the helicopter rolled onto its side. He noted that he had not allowed for the temperature increase from the time of his takeoff on the previous flight until the accident takeoff. He added that he should have reduced the fuel load and not flown with a passenger. He stated that there were no failures or malfunctions associated with the helicopter.

Factual narrative

The amateur-built helicopter was substantially damaged when it caught a skid and rolled over during landing. The pilot stated that he originally landed at the accident airport as an intermediate fuel stop. After fueling, the pilot and passenger planned to continue the trip. The pilot stated that on takeoff, the helicopter had not obtained translational lift before he flew from the paved ramp area toward an agricultural field and "lost [the] cushion of air." He made a "sharp" 180-degree turn in an attempt to return to the ramp area; however, the "passenger side skid hooked [the] edge of [the] tarmac" and the helicopter rolled onto its side. He noted that he had not allowed for the temperature increase from the time of his takeoff on the previous flight until the accident takeoff. He added that he should have reduced the fuel load and not flown with a passenger. He stated that there were no failures or malfunctions associated with the helicopter.

Aircraft

Registration
C-FWBN
Reported as
Hamilton Rotorway Exec 90
Category
Airplane
Serial number
6020
Airframe hours
500
Engine
Rotorway RI-162F, 162 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · September 1, 2006
Departed
5H4 · Harvey, ND
Destination
OSH · Oshkosh, WI
Flight plan
VFR
Airport
ND17 · Harvey Muni

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Injuries
None
Certificate
Private
Medical
Class 3, Without waivers/limitations
Last flight review
February 1, 2007
Seat
Left
Flight hours
81 total · 35 in this make and model · 35 as pilot in command · 20 in the last 90 days · 10 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 73 °F
Altimeter
30.00 inHg
Observed at
DVL