WPR13LA360

NTSB accident investigation · Versteeg Helicycle · Richland, WA · August 5, 2013

Accident · No injuriesLimited investigationFinal report
Date
August 5, 2013, 11:00 local (18:00 UTC)
Place
Richland, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N234RVVersteeg Helicycle
Defining event
Maneuvering-hover: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report August 7, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA-FSDO
FAA report
20130805014769A
Case key
87690

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 helicycle control during hover due to an inadvertent control input.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that, while in a hover about 10 feet above the ground, the helicycle began to spin right and that he was unable to stop the rotation. Subsequently, the helicycle struck a hangar with its tail and rolled over on its left side. The pilot reported that his right ankle was wrapped in a brace due to a recent injury and that, because of this brace, he inadvertently input pressure on the right rudder control input, which caused the helicycle to rotate right. The ankle brace prevented him from noticing the right rudder control input in a timely manner. The pilot reported no mechanical malfunctions or failures with the helicycle that would have precluded normal operation.

Factual narrative

On August 5, 2013, about 1100 Pacific daylight time, an experimental amateur built Versteeg Helicycle, N234RV, sustained substantial damage when it struck a hangar at the Richland Airport (RLD) Richland, Washington. The aircraft was registered to and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91. The commercial pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight. The pilot reported that while in a hover about ten feet above the ground, the aircraft began to spin to the right and he was unable to stop the rotation. Subsequently, it struck a hangar with its tail and rolled over on its left side. Postaccident examination of the aircraft by the pilot revealed that the main rotor and tail rotor systems were substantially damaged. The pilot reported no mechanical anomalies or failures that would have precluded normal operation. During a postaccident telephone interview with the National Transportation Safety Board investigator-in-charge, the pilot reported that his right ankle was wrapped in a brace due to a recent injury. He further reported that he inadvertently inputted pressure on the right rudder pedal that caused the helicopter to rotate. The ankle brace and wrapping prevented him from noticing his right rudder control input in a timely manner.

Aircraft

Registration
N234RV
Reported as
Versteeg Helicycle
Category
Helicopter, amateur-built
Serial number
2-22
Built
2012
Airframe hours
10
Engine
Solar GPU, 160 horsepower, turbo prop
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · March 3, 2013
Departed
RLD · Richland, WA
Destination
RLD · Richland, WA
Airport
RLD · Richland

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
75
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
September 4, 2011
Seat
Front
Restraint
3-point
Flight hours
2,000 total · 15 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 59 °F
Altimeter
29.95 inHg
Observed at
PSC, 8 nm away

Docket · 2

The files NTSB released with the investigation on June 3, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.5 MB in all.

FAA reports on this event · 1

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