CEN24LA169

NTSB accident investigation · Baby Great Lakes - · Castroville, TX · April 29, 2024

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
April 29, 2024, 13:20 local (18:20 UTC)
Place
Castroville, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N822CHBaby Great Lakes -
Defining event
Landing-flare/touchdown: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA
FAA report
20240429003859A
Case key
194175

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 failure of the right main landing gear axle due to multiple fatigue crack initiation points joining into a single larger crack.

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.

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 reported that he thought he struck a pothole while landing on the grass runway. During the landing sequence, the airplane experienced a postimpact fire, and the airplane was destroyed. The pilot sustained thermal injuries and was hospitalized for an extended time period. Postaccident examination of the airplane revealed the right main landing gear axle had fractured during the landing sequence, and the landing gear leg punctured the fuel tank which likely contributed to the postimpact fire. Metallurgical examination revealed a series of ratchet marks consistent with multiple fatigue crack initiation points joining into a single larger crack on the right main landing gear axle. The fatigue crack extended across about 30% of the cross section of the tube before final failure due to overstress. The locations of the fatigue initiation points were consistent with the cyclic bending forces that would have been applied to this section of the landing gear under normal landing and takeoff conditions.

Aircraft

Registration
N822CH
Reported as
Baby Great Lakes -
Category
Airplane, amateur-built
Serial number
350B
Airframe hours
304
Engine
Lycoming O-290G, 135 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · July 26, 2023
Destination
Same as departure
Airport
CVB · Castroville Muni, runway 16, 5,001 × 75 ft, grass/turf
Equipment
Electronic flight bag or handheld device

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
56
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Sport pilot, With waivers/limitations
Last flight review
November 28, 2022
Seat
Center
Restraint
4-point
Flight hours
1,242 total · 383 in this make and model · 1,242 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 8 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
10,000 ft broken
Temperature
86 °F, dew point 66 °F
Altimeter
29.86 inHg
Observed at
KHDO, 17 nm away
METAR
KHDO 291851Z AUTO 15008G15KT 10SM FEW042 SCT050 BKN100 30/19 A2986 RMK AO2 SLP098 T03000189

Docket · 6

The files NTSB released with the investigation on September 4, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.0 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.