- 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.
On this page
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.