LAX02LA149

NTSB accident investigation · Sierra RAF 2000 GTX-SE · Lompoc, CA · May 5, 2002

Accident · No injuriesLimited investigationFinal report
Date
May 5, 2002, 13:45 local (20:45 UTC)
Place
Lompoc, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N256SBSierra RAF 2000 GTX-SE
Weather
Visual (VMC) · Day
Status
Completed · report May 13, 2003
Report
Approved by Office Director
Parties
Federal Aviation Administration - FSDO
FAA report
20020505007799A
Case key
54637

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 compensate for wind condition.

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.

Roll overTakeoff
Weather condition - crosswind
Compensation for wind conditions - inadequatePilot in commandCause

Analysis

The winds were reported ast 270 degrees at 14 knots about the time when the accident occurred. The takeoff was conducted on runway 25. According to the pilot, he increased power to initiate takeoff with a corresponding increase in rotor speed from 208 rpm to above 212 rpm. The aircraft began to roll about 5 mph with the increase in power. As the aircraft lifted off, it started to "lean to the right" and he took corrective action with left stick input that for a half a second was effective. However, the aircraft conitnued in a right turn, despite the control input. The pilot reported that the control stick seemed to be stuck or frozen in place, and he was not able to move he stick to the left. The aircraft continued in the right turn, until the rotor blades struck the ground. The aircraft slid off the right, and came to rest along the right side of the runway.

Factual narrative

On May 5, 2002, at 1345 Pacific daylight time, a Sierra RAF 2000 GTX-SE, N256SB, experienced rotor contact with the ground and the vertical fin during takeoff at the Lompoc, California, airport. The private-certificated pilot and one passenger were not injured. The experimental, amateur-built, gyrocopter was substantially damaged. The gyrocopter was being operated by the owner under 14 CFR Part 91 and was departing for a local area personal flight. Visual meteorological conditions prevailed and no flight plan was filed.

The winds were reported ast 270 degrees at 14 knots when the accident occurred. The takeoff was conducted on runway 25. According to the pilot, he increased power to initiate takeoff with a corresponding increase in rotor speed from 208 rpm to above 212 rpm. The aircraft began to roll about 5 mph with the increase in power. As the aircraft lifted off, it started to "lean to the right" and he took corrective action with left stick input that for a half a second was effective. However, the aircraft conitnued in a right turn, despite the control input. The pilot reported that the control stick seemed to be stuck or frozen in place, and he was not able to move the stick to the left. The aircraft continued in the right turn, until the rotor blades struck the ground. The aircraft slid off the right, and came to rest along the right side of the runway.

Aircraft

Registration
N256SB
Reported as
Sierra RAF 2000 GTX-SE
Category
Gyroplane, amateur-built
Serial number
H2-978294
Airframe hours
168
Engine
Subaru EJ22, 130 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Paul F. Sierra
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · January 21, 2002 · 10 hours before
Departed
LPC · Lompoc, CA
Airport
LPC · Lompoc, runway 25, 3,620 × 100 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
46
Injuries
None
Certificate
Private
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
150 total · 99 as pilot in command · 4 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 14 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 48 °F
Altimeter
30.07 inHg
Observed at
LPC

Docket · 1

The files NTSB released with the investigation on March 20, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.