WPR23LA070

NTSB accident investigation · Vans RV6 · Afton, WY · December 18, 2022

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
December 18, 2022, 14:30 local (21:30 UTC)
Place
Afton, WY
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N78HJVans RV6
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20221218021869A
Case key
106476

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to maintain control during landing on a contaminated runway.

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.

Object/animal/substance: snow/iceEnvironmental issues › Physical environment · Effect on equipmentO'Bryon Hal O'BRYON RV-6A: 1 caseAll aircraft: 67 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedO'Bryon Hal O'BRYON RV-6A: 1 caseAll aircraft: 3,958 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 was planning to complete a touch and go landing on the same runway he departed from 15 minutes earlier, which contained patches of snow and ice. When the airplane touched down, it encountered a patch of ice and skidded left. The plane collided with snow then nosed over and came to rest inverted. The airplane sustained substantial damage to the left wing. The pilot reported no mechanical malfunctions or failures that would have precluded normal operation.

Aircraft

Registration
N78HJ
Reported as
Vans RV6
Category
Airplane
Serial number
21043
Built
2004
Airframe hours
728
Engine
Lycoming O-320-D1A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 15, 2022 · 29 hours before
Departed
KAFO · Afton, WY
Destination
Same as departure
Airport
AFO · Afton Municipal Airport, runway 34, 7,025 × 75 ft, asphalt
Equipment
Auto-pilot

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
79
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed
Last flight review
December 18, 2021
Seat
Left
Restraint
3-point
Flight hours
1,611 total · 505 in this make and model · 1,542 as pilot in command · 5 in the last 90 days · 1 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
3 °F, dew point -0 °F
Altimeter
29.88 inHg
Observed at
KAFO
METAR
METAR KAFO 182155Z AUTO 00000KT 10SM CLR M16/M18 A2988

Docket · 3

The files NTSB released with the investigation on June 23, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.4 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.