FTW01LA108

NTSB accident investigation · Cartercopters Cartercopter · Olney, TX · April 29, 2001

Accident · No injuriesLimited investigationFinal report
Date
April 29, 2001, 14:46 local (19:46 UTC)
Place
Olney, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N121CCCartercopters Cartercopter
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 2001
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20010429009799A
Case key
52170

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 directional control during the takeoff initial climb. Contributory factors were the pilot's lack of experience with the aircraft and the soft terrain.

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.

Loss of control - in flightTakeoff - initial climb
Directional control - not maintainedPilot in commandCause
Lack of familiarity with aircraftPilot in commandFactor
Aborted takeoff - performedPilot in command
Nose gear collapsedLanding - roll
Terrain condition - softFactor

Analysis

The pilot was conducting a test flight over the runway. The experimental prototype gyrocraft took off from the runway and flew approximately 2-3 feet above the ground. The pilot applied "right cyclic control" for drift correction while raising the collective approximately "6 degrees for climb." The pilot reported that at the same time the nose pitched up rapidly and rolled to the right. Corrective control inputs were applied to level the gyrocopter; however, it rolled left and over flew the edge of the runway. The pilot reduced the collective, and the aircraft touched down on the ground in a level attitude rolling approximately 25 mph. As the gyrocraft slowed to approximately 5 mph, the nose landing gear collapsed, the gyrocraft nosed down, and the main rotor blades contacted the ground and sustained structural damage. The pilot had accumulated 3,800 flight hours. This was the pilot's first flight in the accident aircraft.

Factual narrative

On April 29, 2001, at 1446 central daylight time, a Cartercopters Cartercopter experimental prototype gyrocraft, N121CC, was substantially damaged when it encountered soft terrain and nosed down during landing following an aborted takeoff at the Olney Municipal Airport, Olney, Texas. The aircraft was registered to and operated by CarterCopters LLC, of Wichita Falls, Texas. The commercial pilot and his crewmember were not injured. Visual meteorological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 test flight. The local flight was originating at the time of the accident.

According to the FAA inspector, who responded to the accident site, the pilot was conducting a test flight over runway 17. The pilot took off from runway 17 and flew approximately 2-3 feet above the ground. According to the pilot, he applied "right cyclic control" for drift correction while raising the collective approximately "6 degrees for climb." The pilot reported that at the same time the nose pitched up rapidly and rolled to the right. Corrective control inputs were applied to level the gyrocopter; however, it rolled left and over flew the edge of the runway. The pilot reduced the collective, and the aircraft touched down on the ground in a level attitude rolling approximately 25 mph. As the gyrocraft slowed to approximately 5 mph, the nose landing gear collapsed, the gyrocraft nosed down, and the main rotor blades contacted the ground and sustained structural damage.

The pilot had accumulated 3,800 flight hours. However, this was the pilot's first flight in this aircraft. According to the manufacturer, the flight was conducted in order to understand the prototype's flight characteristics.

Aircraft

Registration
N121CC
Reported as
Cartercopters Cartercopter
Category
Gyroplane, amateur-built
Serial number
001
Airframe hours
110.9
Engine
GM Corvette LS1, 350 horsepower, reciprocating
Damage
Substantial damage
Flight
Flight test · Part 91
Registered owner
Cartercopters
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · April 29, 2001 · 8 hours before
Departed
ONY · Olney, TX
Airport
ONY · Olney Municipal, runway 17, 5,500 × 150 ft, concrete

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
66
Injuries
None
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
January 5, 2000
Seat
Left
Flight hours
3,800 total · 3,800 as pilot in command · 2 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 8 knots, gusting 12
Lowest ceiling
None
Temperature
75 °F

FAA reports on this event · 1

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

Other investigations on N121CC · 5

Matched to the same aircraft by N-number and date.