WPR11LA280

NTSB accident investigation · Inhofe/ Davis Vans RV-8 · Sheridan, WY · June 22, 2011

Accident · No injuriesLimited investigationFinal report
Date
June 22, 2011, 17:30 local (23:30 UTC)
Place
Sheridan, WY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4546YInhofe/ Davis Vans RV-8
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 8, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20110622011699A
Case key
80867

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 inadequate directional control during the landing roll.

Findings · 2

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.

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 tailwheel-equipped airplane checked the weather prior to landing and noted a light right crosswind. He performed an uneventful approach with an extended downwind segment. He selected full flaps and performed a slip maneuver during the final approach. Just after the main landing gear made contact with the runway, the airplane began to drift to the left. He countered with successively harder right rudder pedal inputs, and the airplane began to swerve to the right. The airplane veered across the runway and into the grass beside the runway. As the tailwheel touched the ground, the pilot applied left rudder pedal pressure, and the airplane veered left, reentered the runway, and came to rest on a heading almost opposite the landing direction. Postaccident examination revealed evidence, including damage to the outer rim of the right wheel and the fuselage at the right landing gear attach point, indicative of excessive side loading during landing.

Factual narrative

On June 22, 2011, about 1730 mountain daylight time, an Inhofe/Davis (Van's Aircraft) RV-8, N4546Y, departed the runway during landing at Sheridan County Airport, Sheridan, Wyoming. The pilot was operating the airplane under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91. The private pilot and passenger were not injured. The tailwheel-equipped airplane sustained substantial damage. The cross-country flight departed South Grand Lake Regional Airport, Ketchum, Oklahoma, about 1215 central daylight time. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot reported that prior to landing on runway 050 he checked the Automated Surface Observation System (ASOS), which reported light winds from 030 degrees magnetic. He performed an uneventful left downwind approach, with an extended downwind segment. He then selected full flaps, and performed a slip maneuver during the final approach. Just after the main landing gear made contact with the runway, the airplane began to drift to the left. He countered with light application of the right rudder pedal, with unsuccessful results. He then applied increasing right rudder pedal pressure and the airplane began to swerve to the right. The airplane veered across the runway, and onto the opposite verge. As the tailwheel touched the ground, he applied left pedal pressure and the airplane rejoined the runway, coming to rest on a heading of 270 degrees. Examination of the airplane revealed scuff marks on the outer rim of the right wheel, and structural damage to the right side of the fuselage at the intersection of the wing root.

Aircraft

Registration
N4546Y
Reported as
Inhofe/ Davis Vans RV-8
Category
Airplane, amateur-built
Serial number
81168
Airframe hours
350
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · October 7, 2010 · 40 hours before
Departed
1K8 · Ketchum, OK
Destination
SHR · Sheridan, WY
Airport
SHR · Sheridan County, runway 05, 5,039 × 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
50
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
January 10, 2011
Seat
Front
Flight hours
1,235 total · 280 in this make and model · 975 as pilot in command · 16 in the last 90 days · 12 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 48 °F
Altimeter
29.98 inHg
Observed at
SHR

Docket · 7

The files NTSB released with the investigation on December 19, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.9 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.