SEA99LA021

NTSB accident investigation · Elliott RAF 2000 · Walla Walla, WA · December 16, 1998

Accident · No injuriesLimited investigationFinal report
Date
December 16, 1998, 11:31 local (19:31 UTC)
Place
Walla Walla, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N797XElliott RAF 2000
Weather
Visual (VMC) · Day
Status
Completed · report January 11, 2000
Report
Approved by Office Director
FAA report
19981216033359A
Case key
45497

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain directional control after landing.

Analysis

The pilot reported that he was practicing taxi tests after just installing repaired rotor blades and propeller. On his fourth high-speed run, the gyroplane lifted off to approximately 20 feet in altitude. The pilot stated that he closed the throttle and the gyroplane touched down on its tailwheel, then its main gear; while still moving forward with the front wheel elevated, a slight wind gust caused the gyroplane to veer to the right. The pilot stated that he instinctively pushed left rudder, noting that at such slow speed, the rudder is ineffective, however, it does turn the steerable nosewheel to the left. When back pressure was released on the stick, the nosewheel touched down in a left-turn direction, causing the aircraft to roll over due to the sudden turning action.

Factual narrative

On December 16, 1998, at 1131 Pacific standard time, a Elliot RAF 2000 gyroplane, N797X, sustained substantial damage during a hard landing at Walla Walla, Washington. The pilot, the sole occupant, was uninjured. There was no fire, and no report of an ELT actuating. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed for the local flight.

The pilot reported that he was practicing taxi tests after just installing repaired rotor blades and propeller. On his fourth high-speed run, the gyroplane lifted off to approximately 20 feet in altitude. The pilot stated that he closed the throttle and the gyroplane touched down on its tailwheel, then its main gear. The pilot stated that while still moving forward with the front wheel elevated, a slight wind gust caused the gyroplane to veer to the right. The pilot stated that he instinctively pushed left rudder, noting that at such slow speed, the rudder is ineffective, however, it does turn the steerable nosewheel to the left. He stated that when back pressure was released on the stick, the nosewheel touched down in a left-turn direction, causing the aircraft to roll over due to the sudden turning action.

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 - on ground/waterLanding - roll
Directional control - not maintainedPilot in commandCause

Aircraft

Registration
N797X
Reported as
Elliott RAF 2000
Category
Gyroplane, amateur-built
Serial number
H2-97-8-302
Engine
Subaru EJ22, 130 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
William B. Elliott
Airworthiness certificate
Special, Experimental (Special)
Departed
ALW
Airport
ALW · Walla Walla Regional, runway 34, 6,599 × 150 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
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
440 total · 14 in this make and model · 376 as pilot in command · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
43 °F, dew point 34 °F
Altimeter
30.00 inHg
Observed at
ALW

FAA reports on this event · 1

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