WPR11LA216

NTSB accident investigation · Dralle RV-8 · Livermore, CA · May 1, 2011

Accident · No injuriesLimited investigationFinal report
Date
May 1, 2011, 16:30 local (23:30 UTC)
Place
Livermore, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N998RVDralle RV-8
Defining event
Landing-landing roll: Abrupt maneuver
Weather
Visual (VMC) · Day
Status
Completed · report August 3, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20110501008269A
Case key
79013

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 decision to exit the runway while still traveling at an excessive speed and his subsequent loss of directional control.

Findings · 3

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedDralle Matthew G RV-8: 1 caseAll aircraft: 3,958 casesProbable cause
Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Not attained/maintainedDralle Matthew G RV-8: 1 caseAll aircraft: 238 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 of the experimental, amateur-built, tailwheel-equipped airplane reported that he performed a straight-in approach and subsequent landing with a gusting crosswind. As the airplane slowed, and the tail dropped, he applied full aft elevator control input. The pilot applied brakes and then initiated a turn onto the taxiway. He stated that during the turn a gust of wind caught the right wing, tipping the airplane onto the left wing and causing the left aileron hinge to scrape on the runway. The airplane then bounced two times on the left main landing gear. The airplane came to a stop after the pilot applied corrective control inputs. Postaccident examination revealed that the left landing gear mounting box and the adjacent fuselage structure was bent. Additionally the left wing sustained buckling damage to its leading edge, adjacent to the fuselage mounting point and landing gear box. The damage was consistent with the left main landing gear being subjected to an excessive side load. The pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. He further stated that the accident could have been prevented by either slowing the airplane down prior to exiting at the chosen taxiway or continuing to the next available taxiway.

Factual narrative

On May 1, 2011, about 1630 Pacific daylight time, a Dralle (Van's Aircraft) RV-8, N998RV, sustained substantial damage during the landing roll at Livermore Municipal Airport, Livermore, California. The pilot was operating the experimental amateur-built airplane under the provisions of Title 14 Code of Federal Regulations Part 91. The private pilot was not injured. The cross-country personal flight departed Los Banos Municipal Airport, Los Banos, California, about 1600. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot of the tailwheel equipped airplane performed a straight-in approach and subsequent wheel landing on runway 25R. He reported a direct 8-knot crosswind, gusting to 15. As the airplane slowed and the tail dropped, the pilot applied full aft elevator control input. His intention was to exit to the right onto taxiway E, and as he approached the taxiway he applied brakes. He reported that as he initiated the turn, a gust of wind caught the right wing, tipping the airplane onto the left wing and causing the left aileron hinge to scrape on the runway. The airplane then hopped two times on the left main landing gear. The pilot applied left rudder, realigning the airplane with the runway centerline, and the airplane came to a stop. He assessed the situation, and not perceiving any damage, continued to taxi back to his hangar. Post accident examination revealed that the left landing gear mounting box and the adjacent fuselage structure was bent. Additionally, the left wing sustained buckling damage to its leading edge adjacent to the forward fuselage mounting point and landing gear box. The pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. He further stated that the accident could have been prevented by either slowing the airplane down prior to exiting at the chosen taxiway, or continuing to the next available taxiway. He additionally cited gusty wind conditions as aggravating the situation.

Aircraft

Registration
N998RV
Reported as
Dralle RV-8
Category
Airplane, amateur-built
Serial number
82880
Airframe hours
170
Engine
Aero Sport Power IO-390-X, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · April 23, 2011 · 3 hours before
Departed
KLSN · Los Banos, CA
Destination
LVK · Livermore, CA
Airport
LVK · Livermore, runway 25R, 5,253 × 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
47
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
April 30, 2010
Seat
Center
Flight hours
480 total · 178 in this make and model · 480 as pilot in command · 33 in the last 90 days · 14 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 25 °F
Altimeter
30.19 inHg
Observed at
LVK

FAA reports on this event · 1

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