CEN20TA030

NTSB accident investigation · Rotary RAF 2000 · Omaha, NE · December 7, 2019

Accident · Serious injuriesClass 3Final report
Date
December 7, 2019, 13:55 local (18:55 UTC)
Place
Omaha, NE
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N47EBRotary RAF 2000
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20191207017359A
Case key
100664

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 loss of directional control while landing in gusting wind conditions.

Findings · 5

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.

Experience/qualifications: recent experiencePersonnel issues › Experience/knowledge · PilotBase ED RAF 2000: 1 caseAll aircraft: 76 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeBase ED RAF 2000: 1 caseAll aircraft: 1,199 casesProbable cause
Performance/control parameters: descent rateAircraft › Aircraft oper/perf/capability · Capability exceededBase ED RAF 2000: 1 caseAll aircraft: 242 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBase ED RAF 2000: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedBase ED RAF 2000: 1 caseAll aircraft: 3,958 casesProbable cause

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 was conducting takeoffs and landings in the gyroplane when the airplane encountered windshear just above the runway during landing. The gyroplane veered right, touched down in the grass, became airborne, then impacted terrain, resulting in substantial damage. Another pilot reported that he also experienced windshear during the landing approach and saw that the pilot of the accident aircraft "appeared to be struggling to maintain control." The accident pilot reported that he had not flown the aircraft "in a while" and that the gusting wind conditions were the primary factor that resulted in his loss of control. Recorded wind conditions about the time of the accident included wind at 13 knots with gusts to 17 knots.

Factual narrative

On December 7, 2019, about 1355 central daylight time, a Rotary RAF 2000 rotorcraft-gyrocopter, N47EB, impacted terrain at the Millard Airport, Omaha, Nebraska. The pilot, sole occupant, received serious injuries, and the gyrocopter sustained substantial damage. The gyrocopter was operated by and registered to a private individual under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. Day visual meteorological conditions prevailed for the flight. The responding Federal Aviation Administration inspector reported that the gyrocopter had impacted terrain near the parallel taxiway and came to rest on its side. A review of security camera video revealed the gyrocopter approached runway 12, then veered right towards the taxiway and a building, before gaining altitude. The gyrocopter then descended before making several oscillations in altitude above the taxiway. The gyrocopter impacted terrain next to the taxiway and rolled over several times before coming to a stop. In an interview with the FAA inspector, the pilot reported that he hadn't flown the gyrocopter in a while and planned on practicing takeoff and landings. The pilot stated he felt a "windshear" just above the runway, the aircraft then veered to the right, past the runway threshold. He was unable to regain directional control and the aircraft headed toward the taxiway, touched down in the grass median, then became airborne before crossing the taxiway. He added the aircraft then climbed toward the T-hangar area before he was able to regain directional control. He stated that he attempted to touch down again along the taxiway but was unsuccessful, and the aircraft became briefly airborne. He reported that he directed the aircraft toward the ground and caused the aircraft to roll right. The pilot stated that he thought the gusty wind conditions were the primary factor causing him to lose directional control, and there were no pre-impact mechanical problems with the aircraft. Several witnesses saw the accident. One witness, a flight instructor reported that he also experienced "windshear," while on approach to the runway. The instructor also stated that the rotorcraft pilot "appeared to be struggling to maintain control". A review of the wind conditions about the time of the accident revealed that the automated weather station recorded; wind from 190° at 13 knots gusting to 17 knots. A review of FAA records noted the accident pilot held a private certificate with rating for airplane, single-engine land. There was no record of him holding a rotorcraft-gyroplane rating. The pilot reported that he had about 231 hours of rotorcraft flight time. The accident aircraft was a Rotary RAF 2000 gyroplane, built from a kit, and was certified in the Experimental – Amateur Built category. The aircraft's operating limitations were dated December 15, 1997. The pilot reported that the annual inspection had been completed Thanksgiving week, but not logged. The gyrocopter wasnot equipped with a horizontal stabilizer, and a review of the maintenance records for the gyrocopter revealed the aircraft had accumulated a total of 232.1 hours. The United Kingdom's Civil Aircraft Authority conducted a test on the RAF 2000 gyrocopter and identified a potential issue when operating in turbulent or gusty wind conditions and issued MPD (Mandatory Permit Directive) 2003-001, with subsequent superseding MPD's.

Aircraft

Registration
N47EB
Reported as
Rotary RAF 2000 (GTX)
Category
Gyroplane, amateur-built
Serial number
H2-95-6-156
Built
1997
Engine
Subaru EJ-22, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
MLE · Omaha, NE
Destination
MLE · Omaha, NE
Airport
MLE · Millard Airport, runway 12, 3,801 × 75 ft, asphalt

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
87
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Unknown, Unknown

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 13 knots, gusting 17
Visibility
10 statute miles
Temperature
52 °F, dew point 30 °F
Altimeter
30.04 inHg
Observed at
KMLE

Docket · 7

The files NTSB released with the investigation on March 31, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 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.