CEN25LA058

NTSB accident investigation · Vans RV8 · Smithville, TX · December 10, 2024

Accident · Serious injuriesClass 3 · LimitedFinal report
Date
December 10, 2024, 11:30 local (17:30 UTC)
Place
Smithville, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N42CSVans RV8
Defining event
Takeoff: Unknown or undetermined
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20241210018859A
Case key
199413

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

A loss of engine power for undetermined reasons.

Findings · 1

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.

Engine (reciprocating)Aircraft › Aircraft power plant · Unknown/Not determinedSchultz Stephen VANS ACFT RV-8: 1 caseAll aircraft: 497 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 airplane was filled with fuel before takeoff. Shortly after takeoff, at an altitude of 100 to 150 ft above ground level (agl) the airplane’s engine began to lose power and then lost total power. The pilot reported he leveled the wings; however, the airplane entered an aerodynamic stall before it descended and impacted an open field. The engine started and ran to normal operating power during a postaccident engine test run. Although the engine continued to operate although the ignition switch was moved to the “off” position, the issue would not have led to a loss of power. The reason for the loss of engine power could not be determined.

Factual narrative

On December 10, 2024, about 1130 central standard time, a Vans RV-8, N42CS, was substantially damaged when it was involved in an accident near Smithville, Texas. The pilot was seriously injured. The airplane was operated under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. The pilot reported that the accident flight was the second flight of the day. He had flown from San Marcos Airport (KHYI), San Marcos, Texas, to Smithville Crawford Municipal Airport (84R), Smithville, Texas, earlier that morning. He had both fuel tanks topped off before departing 84R. After takeoff, the engine began to cut out and lose engine power. When the airplane reached about 100 to 150 ft agl, the engine lost total power. The airplane was in a left bank, so the pilot rolled the wings level, but the airplane entered an aerodynamic stall before it descended and impacted terrain about 1,000 ft north of the departure end of the runway. The airplane was recovered to a salvage facility for further examination. On March 7, 2025, an engine run was conducted, and the engine started and ran without any problems noted. The engine was able to produce rated power. The engine continued to run with the ignition switch in the “off” position. The switch connection’s ground intermittently and appeared to be in a condition which would have allowed continued operation of the magnetos. Disassembly of the switch did not find any anomalies. The loss of engine power could not be replicated.

Aircraft

Registration
N42CS
Reported as
Vans RV8
Category
Airplane, amateur-built
Serial number
80546
Built
2003
Airframe hours
985.7
Engine
Lycoming IO-360-B1B, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Davis Robert W
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · October 9, 2024 · 10 hours before
Destination
KHYI · San Marcos, TX
Airport
84R · Smithville Crawford Muni
Equipment
Electronic primary flight display, Electronic multifunction display, Auto-pilot, ADS-B

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
Serious
Certificates
Flight engineer, Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Seat
Front
Restraint
5-point
Flight hours
24,000 total · 795 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 11 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
2,000 ft overcast
Temperature
55 °F, dew point 46 °F
Altimeter
30.13 inHg
Observed at
KGYB, 13 nm away
METAR
KGYB 101735Z AUTO 35011G20KT 10SM OVC020 13/08 A3013 RMK AO2 T01250080

Docket · 4

The files NTSB released with the investigation on May 6, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.3 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.